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