Initial Field Observations in California on Trioxys pallidus (Haliday) a Recently Introduced Parasite of the Walnut Aphid1

Author: VAN DEN BOSCH ROBERT   SCHLINGER EVERT I.   HAGEN KENNETH S.  

Publisher: Entomological Society of America

ISSN: 1938-291X

Source: Journal of Economic Entomology, Vol.55, Iss.6, 1962-12, pp. : 857-862

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