51. Solar Sails
by Gregory Matloff Greg Matloff Les Johnson Giovanni Vulpetti 
Price: USD 16.44
Dealer: Abebooks, Books Puddle
Description: ISBN10: 0387344047, ISBN13: 9780387344041, [publisher: Springer] Hardcover pp. xvi + 256 1st Edition [New York, NY, U.S.A.] [Publication Year: 2008]  

52. Solar Sails
by Matloff Gregory Matloff Greg Johnson Les Vulpetti Giovanni 
Price: USD 14.17
Dealer: AbebooksUK, Majestic Books
Description: ISBN10: 0387344047, ISBN13: 9780387344041, [publisher: Springer] Hardcover pp. xvi + 256 [Hounslow, United Kingdom] [Publication Year: 2008]