TY  - BOOK
AU  - 	Richard E Leakey
TI  - The origin of humankind
T2  - 	Science masters series
SN  - 0465031358
U1  - 599.938 R382 O 
PY  - 1994///
CY  - 	New York
PB  -  BasicBooks, 
KW  - Prehistoric peoples
KW  - Human evolution
N1  - This book answers the question: What made humans human? Leakey argues that when one of our hominid ancestors acquired the ability to walk upright (called "bipedalism"), the evolution of modern humans became possible, perhaps even inevitable
ER  -