TY  - BOOK
AU  - Rensch,Bernhard
TI  - Evolution above the species level
T2  - Columbia biological series
SN  - 0231022964
U1  - 591.38 
PY  - 1959///
CY  - New York
PB  - Columbia University Press, 
KW  - EVOLUCION (BIOLOGIA)
N1  - Translation, with a few alterations and additions, of the 2d ed. of: Neuere Probleme der Abstammungslehre
ER  -