101. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 3.50
Dealer: Alibris, HPB Inc. via Alibris
Description: Harper Perennial 1999 Paperback Very good Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! 

102. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 3.50
Dealer: Alibris, HPB Inc. via Alibris
Description: Harper Perennial 1999 Paperback Very good Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! 

103. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 4.54
Dealer: Alibris, HPB Inc. via Alibris
Description: Harper Perennial 1999 Paperback Very good Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! 

104. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 3.00
Dealer: Alibris, HPB-Diamond via Alibris
Description: Harper Perennial 1999 paperback Very good Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! 

105. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 5.59
Dealer: Alibris, HPB-Emerald via Alibris
Description: Harper Perennial 1999 paperback Very good Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! 

106. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 5.59
Dealer: Alibris, HPB-Emerald via Alibris
Description: Harper Perennial 1999 paperback Very good Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! 

107. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 6.99
Dealer: Alibris, HPB-Emerald via Alibris
Description: Harper Perennial 1999 paperback Very good Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! 

108. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 6.99
Dealer: Alibris, HPB-Movies via Alibris
Description: Harper Perennial 1999 paperback Very good Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! 

109. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 6.99
Dealer: Alibris, HPB-Movies via Alibris
Description: Harper Perennial 1999 paperback Very good Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! 

110. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 3.00
Dealer: Alibris, HPB-Ruby via Alibris
Description: Harper Perennial 1999 paperback Very good Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! 

111. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 3.00
Dealer: Alibris, HPB-Ruby via Alibris
Description: Harper Perennial 1999 paperback Very good Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! 

112. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 3.50
Dealer: Alibris, Half Price Books Inc via Alibris
Description: Harper Perennial 1999 paperback Very good Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! 

113. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 5.59
Dealer: Alibris, Half Price Books Inc via Alibris
Description: Harper Perennial 1999 paperback Very good Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! 

114. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 6.99
Dealer: Alibris, Half Price Books Inc via Alibris
Description: Harper Perennial 1999 paperback Very good Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! 

115. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 1.98
Dealer: Alibris, Orion Tech via Alibris
Description: Harper Perennial 1999-06-01 paperback Good Size: 5x0x8; 

116. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 20.99
Dealer: Alibris, Russell Books via Alibris
Description: Harper Perennial 1999 Trade paperback New Special order direct from the distributor. 

117. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 4.99
Dealer: Alibris, St. Vinnie's Books via Alibris
Description: Harper Perennial 1999 Trade paperback Acceptable Paperback The item is fairly worn but still readable. Signs of wear include aesthetic issues such as scratches, worn covers, damaged binding. The item may have identifying markings on it or show other signs of previous use. May have page creases, creased spine, bent cover or markings inside. Packed with care, shipped promptly. 

118. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 12.00
Dealer: Alibris, The Book House - Saint Louis via Alibris
Description: Harper Perennial 1999 Softcover Very Good Very Good softcover. 

119. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 2.14
Dealer: Alibris, ThriftBooks-Atlanta via Alibris
Description: Harper Perennial 1999 Softcover Good Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less. 

120. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 2.14
Dealer: Alibris, ThriftBooks-Atlanta via Alibris
Description: Harper Perennial 1999 Softcover Good Former library book; Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less. 

121. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 2.14
Dealer: Alibris, ThriftBooks-Baltimore via Alibris
Description: Harper Perennial 1999 Softcover Good Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less. 

122. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 2.14
Dealer: Alibris, ThriftBooks-Reno via Alibris
Description: Harper Perennial 1999 Softcover Good Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less. 

123. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 2.14
Dealer: Alibris, ThriftBooks-Reno via Alibris
Description: Harper Perennial 1999 Softcover Fair Readable copy. Pages may have considerable notes/highlighting. ~ ThriftBooks: Read More, Spend Less. 

124. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 4.45
Dealer: Alibris, Wonder Book - Member ABAA/ILAB via Alibris
Description: Harper Perennial 1999 Trade paperback Very Good Very Good condition. A copy that may have a few cosmetic defects. May also contain a few markings such as an owner's name, short gifter's inscription or light stamp. 

125. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 4.45
Dealer: Alibris, Wonder Book - Member ABAA/ILAB via Alibris
Description: Harper Perennial 1999 Trade paperback Good Good condition. With remainder mark. A copy that has been read but remains intact. May contain markings such as bookplates, stamps, limited notes and highlighting, or a few light stains. Bundled media such as CDs, DVDs, floppy disks or access codes may not be included. 

126. Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 6.09
Dealer: Alibris, ZBK Books via Alibris
Description: Harper Perennial 1999 Softcover Pages and cover are intact. Used book in good and clean conditions. Limited notes marks and highlighting may be present. May show signs of normal shelf wear and bends on edges. Item may be missing CDs or access codes. May include library marks. 

127. Calendar: Humanitys Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 6.15
Dealer: Abebooks, Blue Vase Books
Description: ISBN10: 0380793245, ISBN13: 9780380793242, [publisher: Harper Perennial] Softcover The item is very worn but continues to work perfectly. Signs of wear can include aesthetic issues such as scratches, dents, worn and creased covers, folded page corners and minor liquid stains. All pages and the cover are intact, but the dust cover may be missing. Pages may include moderate to heavy amount of notes and highlighting, but the text is not obscured or unreadable. Page edges may have foxing (age related spots and browning). May NOT include discs, access code or other supplemental materials. [Interlochen, MI, U.S.A.] [Publication Year: 1999]  

128. Calendar
by David Ewing Duncan 
Price: USD 22.02
Dealer: Abebooks, Books Puddle
Description: ISBN10: 0380793245, ISBN13: 9780380793242, [publisher: Harper Collins Publishers] Softcover pp. 352 [New York, NY, U.S.A.] [Publication Year: 1999]  

129. Calendar
by David Ewing Duncan 
Price: USD 3.00
Dealer: Abebooks, Library House Internet Sales
Description: ISBN10: 0380793245, ISBN13: 9780380793242, [publisher: Harper Perennial] Softcover The adventure spans the world from Stonehenge to astronomically aligned pyramids at Giza, from Mayan observatories at Chichen Itza to the atomic clock in Washington, the world's official timekeeper since the 1960s. We visit cultures from Vedic India and Cleopatra's Egypt to Byzantium and the Elizabethan court; and meet an impressive cast of historic personages from Julius Caesar to Omar Khayyam, and giants of science from Galileo and Copernicus to Stephen Hawking. Our present calendar system predates the invention of the telescope, the mechanical clock, and the concept ol zero and its development is one of the great untold stories of science and history. How did Pope Gregory set right a calendar which was in error by at least ten lull days? What did time mean to a farmer on the Rhine in 800 A.D.? What was daily life like in the Middle Ages, when the general population reckoned births and marriages by seasons, wars, kings'' reigns, and saints' days? In short, how did the world The adventure spans the world from Stonehenge to astronomically aligned pyramids at Giza, from Mayan observatories at Chichen Itza to the atomic clock in Washington, the world's official timekeeper since the 1960s. We visit cultures from Vedic India and Cleopatra's Egypt to Byzantium and the Elizabethan court; and meet an impressive cast of historic personages from Julius Caesar to Omar Khayyam, and giants of science from Galileo and Copernicus to Stephen Hawking. Our present calendar system predates the invention of the telescope, the mechanical clock, and the concept ol zero and its development is one of the great untold stories of science and history. How did Pope Gregory set right a calendar which was in error by at least ten lull days? What did time mean to a farmer on the Rhine in 800 A.D.? What was daily life like in the Middle Ages, when the general population reckoned births and marriages by seasons, wars, kings'' reigns, and saints' days? Solid binding. Please note the image in this listing is a stock photo and may not match the covers of the actual item. [Grand Rapids, OH, U.S.A.] [Publication Year: 1999]  

130. Calendar
by David Ewing Duncan 
Price: USD 4.00
Dealer: Abebooks, Library House Internet Sales
Description: ISBN10: 0380793245, ISBN13: 9780380793242, [publisher: Harper Perennial] Softcover The adventure spans the world from Stonehenge to astronomically aligned pyramids at Giza, from Mayan observatories at Chichen Itza to the atomic clock in Washington, the world's official timekeeper since the 1960s. We visit cultures from Vedic India and Cleopatra's Egypt to Byzantium and the Elizabethan court; and meet an impressive cast of historic personages from Julius Caesar to Omar Khayyam, and giants of science from Galileo and Copernicus to Stephen Hawking. Our present calendar system predates the invention of the telescope, the mechanical clock, and the concept ol zero and its development is one of the great untold stories of science and history. How did Pope Gregory set right a calendar which was in error by at least ten lull days? What did time mean to a farmer on the Rhine in 800 A.D.? What was daily life like in the Middle Ages, when the general population reckoned births and marriages by seasons, wars, kings'' reigns, and saints' days? In short, how did the world The adventure spans the world from Stonehenge to astronomically aligned pyramids at Giza, from Mayan observatories at Chichen Itza to the atomic clock in Washington, the world's official timekeeper since the 1960s. We visit cultures from Vedic India and Cleopatra's Egypt to Byzantium and the Elizabethan court; and meet an impressive cast of historic personages from Julius Caesar to Omar Khayyam, and giants of science from Galileo and Copernicus to Stephen Hawking. Our present calendar system predates the invention of the telescope, the mechanical clock, and the concept ol zero and its development is one of the great untold stories of science and history. How did Pope Gregory set right a calendar which was in error by at least ten lull days? What did time mean to a farmer on the Rhine in 800 A.D.? What was daily life like in the Middle Ages, when the general population reckoned births and marriages by seasons, wars, kings'' reigns, and saints' days? Due to age and/or environmental conditions, the pages of this book have darkened. Ex-Libris and is stamped as such. Please note the image in this listing is a stock photo and may not match the covers of the actual item. [Grand Rapids, OH, U.S.A.] [Publication Year: 1999]  

131. Calendar:: Humanity's Epic Struggle to Determine a True and Accurate Year (Paperback or Softback)
by Duncan, David Ewing 
Price: USD 17.14
Dealer: Abebooks, BargainBookStores
Description: ISBN10: 0380793245, ISBN13: 9780380793242, [publisher: Harper Perennial 6/1/1999] Softcover Calendar:: Humanity's Epic Struggle to Determine a True and Accurate Year 0.56 [Grand Rapids, MI, U.S.A.] [Publication Year: 1999]  

132. Calendar:: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 6.14
Dealer: Abebooks, ThriftBooks-Atlanta
Description: ISBN10: 0380793245, ISBN13: 9780380793242, [publisher: Harper Perennial] Softcover Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less 0.65 [AUSTELL, GA, U.S.A.] [Publication Year: 1999]  

133. Calendar:: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 6.14
Dealer: Abebooks, ThriftBooks-Dallas
Description: ISBN10: 0380793245, ISBN13: 9780380793242, [publisher: Harper Perennial] Softcover Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less 0.65 [Dallas, TX, U.S.A.] [Publication Year: 1999]  

134. Calendar:: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 6.14
Dealer: Abebooks, ThriftBooks-Reno
Description: ISBN10: 0380793245, ISBN13: 9780380793242, [publisher: Harper Perennial] Softcover Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less 0.65 [Reno, NV, U.S.A.] [Publication Year: 1999]  

135. Calendar:: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 13.48
Dealer: AbebooksUK, Chiron Media
Description: ISBN10: 0380793245, ISBN13: 9780380793242, [publisher: HarperPerennial 2001-01] Softcover [Wallingford, United Kingdom] [Publication Year: 2001]  

136. Calendar:: Humanity's Epic Struggle to Determine a True and Accurate Year
by David Ewing Duncan 
Price: USD 19.90
Dealer: Biblio, The Saint Bookstore
Description: Paperback / softback. New. ISBN 0380793245 9780380793242 [GB] 

137. Calendar:: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan David Ewing 
Price: USD 6.14
Dealer: Biblio, ThriftBooks
Description: Harper Perennial, Date: 1999. Paperback. Acceptable. Readable copy. Pages may have considerable notes/highlighting. ~ ThriftBooks: Read More, Spend Less.Dust jacket quality is not guaranteed. 1999. Harper Perennial ISBN 0380793245 9780380793242 [US] 

138. Calendar:: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 13.27
Dealer: Alibris
Description: New York, NY Harper Perennial 1999 Trade paperback New. Trade paperback (US). Glued binding. 352 p. Contains: Unspecified. 

139. Calendar:: Humanity's Epic Struggle to Determine a True and Accurate Year
by Duncan, David Ewing 
Price: USD 29.39
Dealer: Alibris, Booksplease via Alibris
Description: New York, NY Harper Perennial 1999 Trade paperback New. Trade paperback (US). Glued binding. 352 p. Contains: Unspecified.