Honey and pollen plants of the United States
By: by Everett Oertel
Series: Circular / United States Department of Agriculture -- no. 554; Circular (United States. Dept. of Agriculture) -- no. 554.
Publisher: U.S. Dept. of Agriculture
Published: 1939
Place of publication: Washington, D.C
Language: eng
Number of pages: 64
Subjects: Honey plants; Pollen
Notes: Caption title.

Bibliography: p. 40-41.