TY  - BOOK
AU  - Rensch, Bernhard,
TI  - Evolution above the species level
U1  - 591.38 REN 
PY  - 1960///. [c1959]
CY  - New York
PB  - Columbia University Press
KW  - Evolution
N1  - Translation of Neuere Probleme der Abstammungslehre; Includes bibliographical references
ER  -