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Biological control: Natural enemies of aphid in California sought in European, Mid-East countries
Author
C.P. ClausenAuthor Affiliations
C. P. Clausen is Chairman, Department of Biological Control, University of California, Riverside.Publication Information
Hilgardia 9(7):4-4. DOI:10.3733/ca.v009n07p4b. July 1955.
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Abstract
Field observations on the yellow clover aphid were made in southern California during the past year to determine the status of the predators that attack the aphid and the presence or absence of internal parasites. No internal parasites were found.
Clausen C. 1955. Biological control: Natural enemies of aphid in California sought in European, Mid-East countries. Hilgardia 9(7):4-4. DOI:10.3733/ca.v009n07p4b
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