TY - BOOK AU - Rensch,Bernhard,1900- TI - Evolution above the species level T2 - Columbia biological series PY - 1959/// CY - London PB - Methuen & Co. Ltd. KW - Evolution KW - Phylogeny N1 - Translation of Neuere Probleme der Abstammungslehre; Bibliography: p. 363-403.'Postscript' (p. 361-362) includes supplementary bibliography ER -