00817cam a2200253 4500 540069974 TxAuBib 771108s1977||||||||||||||||||||||||eng|u 77077941 9780525171942 $17.95 0525171940 $17.95 (OCoLC)3349989 TxAuBib Leakey, Richard E. Origins : what new discoveries reveal about the emergence of our species and its possible future / Richard E. Leakey and Roger Lewin. New York : Dutton, 1977. 264 p. : ill. (some col.) ; 25 cm. Includes index. Bibliography: p. 257. Human evolution. Anthropology. Lewin, Roger,. QS7