TY  - BOOK
AU  - Simpson, George Gaylors, 1902-
TI  - The major features of evolution
T2  - Columbia biological sseries, no. 17
U1  - 575/Si58m 
PY  - 1953///
CY  - New York
PB  - Columbia University Press
KW  - Evolution
N1  - Bibliography: p. 397-413
ER  -