1. Could You Ever Speak Chimpanzee? (Could You Ever Series)
by Darling, David J. 
Price: USD 51.48
Dealer: Alibris, Bonita via Alibris
Description: Dillon Pr 1991 hardcover Good Access codes and supplements are not guaranteed with used items. May be an ex-library book. 

2. Could You Ever Speak Chimpanzee? (Could You Ever Series)
by Darling, David J. 
Price: USD 9.71
Dealer: Alibris, Wonder Book - Member ABAA/ILAB via Alibris
Description: Dillon Press 1991 Hard cover Good Good condition. 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. 

3. Could You Ever Speak Chimpanzee? (Could You Ever Series)
by Darling, David J. 
Price: USD 10.36
Dealer: Abebooks, Wonder Book
Description: ISBN10: 0875184480, ISBN13: 9780875184487, [publisher: Dillon Pr] Hardcover Good condition. 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. [Frederick, MD, U.S.A.] [Publication Year: 1991]  

4. Could You Ever Speak Chimpanzee? (Could You Ever Series)
by Darling, David J. 
Price: USD 9.87
Dealer: ZVAB, Wonder Book
Description: ISBN10: 0875184480, ISBN13: 9780875184487, [publisher: Dillon Pr] Hardcover Good condition. 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. [Frederick, MD, U.S.A.] [Publication Year: 1991]  

5. Could You Ever Speak Chimpanzee? Could You Ever Series
by Darling David J. 
Price: USD 9.71
Dealer: Biblio, Wonder Book
Description: Dillon Pr. Used - Good. Good condition. 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. Dillon Pr ISBN 0875184480 9780875184487 [US] 

6. Could You Ever Speak Chimpanzee? Could You Ever Series
by David J. Darling 
Price: USD 14.76
Dealer: Biblio, Ergodebooks
Description: Dillon Pr, Date: 1990-08. Library Binding. Good. 1990. Dillon Pr ISBN 0875184480 9780875184487 [US]