TY  - BOOK
AU  - Isaac,Glynn L
AU  - Leakey,Richard E.
TI  - Human ancestors: readings from Scientific American 
SN  - 0716711001
PY  - 1979///
CY  - San Francisco
PB  - W. H. Freeman
KW  - Human evolution
KW  - Addresses, essays, lectures
KW  - Paleolithic period
N1  - Includes bibliographical references (p. 125 -126) and index
ER  -