Elm leaf curl and woolly apple aphid
By: [Edith M. Patch]
Series: Bulletin / Maine Agricultural Experiment Station -- no.       203
Publisher: Maine Agricultural Experiment Station
Published: 1912
Place of publication: Orono
Language: eng
Number of pages: 258
Subjects: Diseases and pests; Apples; Woolly apple aphid; Elm
Notes: Bibliography: p. 255-258.