The apple maggot
By: by B.A. Porter.
Contributors: United States. Dept. of Agriculture.
Series: Technical bulletin / United States Department of Agriculture -- no. 66; Technical bulletin (United States. Dept. of Agriculture) -- no. 66.
Publisher: U.S. Dept. of Agriculture
Published: 1928
Place of publication: Washington
Language: eng
Number of pages: 48
Subjects: Apple maggot.; Apples -- Diseases and pests.
Notes: Cover title.

Literature cited: p. 46-48.