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By "Hansen, H L "
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The parasites of the clover seed Chalcid in the United States (Hymenoptera: Chalcidoidea)
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By: Butler, George D. (George Daniel), - Hansen, H L
Type: Article
In: The Pan-Pacific entomologist
Volume: 34
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Date: 1958
Page Range: 223--229
Publication Info: San Francisco Pacific Coast Entomological Society
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