Der Apfelblattsauger, Psylla mali Schmidberger
By: von Dr. Walter Speyer ...
Series: Monographien zum Pflanzenschutz -- v. 1; Monographien zum Pflanzenschutz -- v. 1.
Publisher: J. Springer
Published: 1929
Place of publication: Berlin
Language: ger
Number of pages: 127
Subjects: Beneficial insects; Insect pests; Apples; Diseases and pests