oa Journal of the Entomological Society of Southern Africa - The introduction into the Union of South Africa of some natural enemies of mealy bugs
The generosity of the Commonwealth Fund enabled the writer to spend the years 1933 and 1934 at the Riverside Research Station of the University of California, U.S.A. While at this station he gave most of his time to the study of beneficial insects, particularly the parasites of Pseudococcus maritimus Ehrh. He was thus placed in a position to benefit from the experience and kindly co-operation of the well-known authority on biological control, Prof. Harry S. Smith, and his able staff.
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