Blight of pears, apples, and quinces
By: [by Harry L. Keil]
Contributors: United States. Agricultural Research Service.
Edition: Rev. Feb. 1972, slightly rev. Apr. 1977.
Series: Leaflet - Dept. of Agriculture ; no. 187; Leaflet (United States. Dept. of Agriculture) -- no. 187.
Publisher: Dept. of Agriculture, Agricultural Research Service
Published: 1977
Place of publication: Washington
Language: eng
Subjects: Pear -- Diseases and pests.; Apples -- United States -- Diseases and pests.; Quince -- Diseases and pests.
Notes: Cover title.