Blight of pears, apples, and quinces
By: prepared by Crops Research Division, Agricultural Research Service
Edition: Rev. Oct. 1970.
Series: Leaflet / U.S. Dept. of Agriculture -- no. 187; Leaflet (United States. Dept. of Agriculture) -- no. 187.
Publisher: U.S. Dept. of Agriculture
Published: 1970
Place of publication: Washington, D.C
Language: eng
Subjects: Apples; Diseases and pests; Fire-blight; Pear; Quince
Notes: Cover title.

"Revised October 1970."