Eine neue Art der Gattung Aphis L. (Homoptera, Aphididae) an Knautia arvensis (L.) Coult. aus Polen
Series: Annales zoologici -- t. 26, nr. 13
Publisher: Polska Akademia Nauk, Instytut Zoologiczny
Published: 1968
Place of publication: Warszawa
Language: ger
Number of pages: 341
Notes: Title also in Polish and Russian; summaries in Polish and Russian.