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Delineating species for conservation using mitochondrial sequence data: the taxonomic status of two problematic Bombus species (Hymenoptera: Apidae)

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Journal of Economic Entomology, Vol. 94, Iss. 3, 2001-06 ,pp. : 609-616

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Comparison and Examination of Bombus occidentalis and Bombus impatiens (Hymenoptera: Apidae) in Tomato Greenhouses

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Comparison of the Efficiency of the Bumble Bees Bombus impatiens and Bombus ephippiatus (Hymenoptera: Apidae) as Pollinators of Tomato in Greenhouses

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