1. The Grolier Encyclopedia of Knowledge
Price: USD 3.85
Dealer: ZVAB, Better World Books
Description: ISBN10: 0717253007, ISBN13: 9780717253005, [publisher: Scholastic Library Publishing] Hardcover Used book that is in excellent condition. May show signs of wear or have minor defects. [Mishawaka, IN, U.S.A.] [Publication Year: 1991]  

2. The Grolier Encyclopedia of Knowledge
Price: USD 4.00
Dealer: Abebooks, Better World Books
Description: ISBN10: 0717253007, ISBN13: 9780717253005, [publisher: Scholastic Library Publishing] Hardcover Used book that is in excellent condition. May show signs of wear or have minor defects. [Mishawaka, IN, U.S.A.] [Publication Year: 1991]  

3. Encyclopedia of Knowledge
Price: USD 4.98
Dealer: Abebooks, SecondSale
Description: ISBN10: 0717253007, ISBN13: 9780717253005, [publisher: Grolier] Hardcover Item in good condition. Textbooks may not include supplemental items i.e. CDs, access codes etc. [Montgomery, IL, U.S.A.] [Publication Year: 1991]  

4. The Grolier Encyclopedia of Knowledge
Price: USD 5.74
Dealer: Biblio, Better World Books
Description: Scholastic Library Publishing. Used - Very Good. Used book that is in excellent condition. May show signs of wear or have minor defects. Scholastic Library Publishing ISBN 0717253007 9780717253005 [US] 

5. Encyclopedia of knowledge
Price: USD 7.77
Dealer: Biblio, Ergodebooks
Description: Grolier, Date: 1991. Loose Leaf. Good. 1991. Grolier ISBN 0717253007 9780717253005 [US] 

6. Encyclopedia of Knowledge
by Grolier, Inc 
Price: USD 12.50
Dealer: Alibris, Half Price Books Inc via Alibris
Description: Grolier 1991 hardcover 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! 

7. Encyclopedia of Knowledge
Price: USD 12.50
Dealer: Abebooks, Half Price Books Inc.
Description: ISBN10: 0717253007, ISBN13: 9780717253005, [publisher: Grolier] Hardcover 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! [Dallas, TX, U.S.A.] [Publication Year: 1991]  

8. Encyclopedia of Knowledge
Price: USD 83.72
Dealer: AbebooksUK, dsmbooks
Description: ISBN10: 0717253007, ISBN13: 9780717253005, [publisher: Grolier] Hardcover Good [liverpool, United Kingdom] [Publication Year: 1991]