TY  - BOOK
AU  - Leakey, Richard E.
AU  - Lewin, Roger
TI  - Origins : : What new discoveries reveal about the emergence of our species and its possible future 
SN  - 0525171940
AV  - GN 31.2 L43.1977
PY  - 1977///
CY  - New York 
PB  - : E. P. Dutton 
KW  - Antropología
KW  - Evolución humana
ER  -