The woolly aphis of the apple
Subtitle: (Schizoneura lanigera Hausmann)
Series: United States Dept. of agriculture. Division of entomology. Circular, ser. 2 -- 20
Publisher: Govt. print. off.
Published: 1897
Place of publication: Washington
Language: eng
Subjects: Woolly aphis
Notes: Signed: C. L. Marlatt.