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By "Ritchie, P L "
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Additional biological notes on Megachile concinna Smith in Arizona (Hymenoptera: Megachilidae)
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By: Butler, George D. (George Daniel), - Ritchie, P L
Type: Article
In: The Pan-Pacific entomologist
Volume: 41
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Date: 1965
Page Range: 153--157
Publication Info: San Francisco Pacific Coast Entomological Society
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