Experimental taxonomy
By: by Jens Clausen, David D. Keck and William M. Heusi
Publisher: Carnegie Institution
Published: 1933
Place of publication: Washington, D.C.
Language: eng
Subjects: Plants; Classification
Notes: Title from caption.

"Reprinted from Annual Report of Chairman of the Division of Plant Biology, Carnegie Institution Year Book no. 32, 1932-33, pages 192-196. Issued December 15, 1933."