The over-wintering and emergence of Bombus (Pyrobombus) impatiens (Cresson) (Hymenoptera: Apidæ) in southern Ontario.

Autor: Szabo, T., Pengelly, D.
Zdroj: Insectes Sociaux; Jun1973, Vol. 20 Issue 2, p125-132, 8p
Databáze: Complementary Index
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