Two leafhoppers injurious to apple nursery stock
By: by A.J. Ackerman
Series: Bulletin / United States Department of Agriculture -- no. 805; Bulletin of the U.S. Department of Agriculture -- no. 805.
Publisher: U.S. Dept. of Agriculture
Published: 1919
Place of publication: Washington, D.C
Language: eng
Number of pages: 35
Subjects: Nursery stock; Apples; Diseases and pests; Leafhoppers
Notes: Caption title.

"December 15, 1919."

"Professional paper."

Bibliography: p. 34-35.