Incidence Counts for Estimating Densities of Rhopalosiphum padi (Homoptera: Aphididae)

Author: Ekbom Barbara Sohm  

Publisher: Entomological Society of America

ISSN: 1938-291X

Source: Journal of Economic Entomology, Vol.80, Iss.4, 1987-08, pp. : 933-935

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