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Chimpanzees
P. H Napier
Hardcover (McGraw-Hill, Jan. 1, 1976)Describes the characteristics and habits of chimpanzees, including their group society, communication techniques, and intelligence.
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Chimpanzees
Prudence Hero Napier, Douglas Bowness
Hardcover (Random House Children's Books (A Division of Random House Group), Dec. 31, 1974)None