The Imperial strains of lettuce
By: by I.C. Jagger ... [et al.].
Series: Circular / United States Department of Agriculture -- no. 596; Circular (United States. Dept. of Agriculture) -- no. 596.
Publisher: U.S. Dept. of Agriculture
Published: 1941
Place of publication: Washington, D.C
Language: eng
Number of pages: 16
Subjects: Lettuce; Varieties
Notes: Caption title.

"Contribution from Bureau of Plant Industry."

Includes bibliographical references.