Montgomery, Sy Walking with the Great Apes / Sy Montgomery / coauts.- Jane Goodall, Dian Fossey, Birute Galdikas - Boston, Massachusetts : Houghton Mifflin Company , c1991. - 280 p. : il. ISBN: 0-395-51597-1 Subjects--Topical Terms: Apes--- Behavior Dewey Class. No.: 599.88 MON