TY  - BOOK
AU  - Simpson,George Gaylord
TI  - The major features of evolution
U1  - 576.8 SIM/M 
PY  - 1953///
CY  - . - New York
PB  - : Columbia University Press
KW  - Evolution (Biology)
N1  - Based on the author's Tempo and mode of evolution; Bibliography: p. [395]-413
ER  -