TY  - BOOK
AU  - Simpson,George Gaylord
TI  - Tempo and mode in evolution
SN  - 0231058470 :
U1  - 575 
PY  - 1944/// (reprinted 1984)
CY  - New York
PB  - Columbia University Press
KW  - Human ecology
KW  - Evolution (Biology)
N1  - Includes index; Bibliography: p. [219]-226
ER  -