Biological Control of Forest Insects in the United States and Canada

Author: Dowden Philip B.  

Publisher: Society of American Foresters

ISSN: 0022-1201

Source: Journal of Forestry, Vol.55, Iss.10, 1957-10, pp. : 723-726

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Abstract

Entomologists are turning more and more attention to the use of parasites, predators, and virus diseases for controlling harmful forest insects.