Stages in the evolution of plant species.

Bibliographic Details
Main Author:	Clausen, Jens Christian, 1891-
Format:	Book
Language:	English
Published:	Ithaca : Cornell University Press, 1951.
Series:	Messenger lectures on the evolution of civilization ; 1950.
Subjects:	Plants > Evolution. Biological Evolution. Plants.

Description
Physical Description:	viii, 206 pages : illustrations ; 25 cm.
Bibliography:	Bibliography: pages 183-188.