The American species of Crepis
Subtitle: their interrelationships and distribution as affected by polyploidy and apomixis
By: [by] E.B. Babcock [and] G.L. Stebbins, jr.
Contributors: Stebbins, G. Ledyard 1906-
Series: [Carnegie institution of Washington.  Publication no. 504]
Publisher: Carnegie institution of Washington
Published: 1938
Place of publication: Washington, D.C
Language: eng
Number of pages: 199
Subjects: Crepis
Notes: "First issued December 6, 1938."

"Literature cited": p. 75-78.