New citrus hybrids
By: by Walter T. Swingle, T. Ralph Robinson, and E.M. Savage
Contributors: Robinson, T. Ralph (Thomas Ralph), 1876-; Savage, E. M. (Edward Morris), 1881-
Series: Circular / United States Department of Agriculture -- no. 181; Circular (United States. Dept. of Agriculture) -- no. 181.
Publisher: U.S. Dept. of Agriculture
Published: 1931
Place of publication: Washington, D.C
Language: eng
Number of pages: 20
Subjects: Citrus; Varieties
Notes: Cover title.

Bibliography: p. 18-19.