Use of stop-drop sprays on apples and pears
Series: ARS -- 22-28; ARS (Series) (United States. Agricultural Research Service) -- 22-28.
Publisher: Agricultural Research Service, U.S. Dept. of Agriculture
Published: 1956
Place of publication: [Washington, D.C.]
Language: eng
Subjects: Apples; Pears; Plant regulators; Foliar application
Notes: Cover title.

"July 1956."