Biblio
“Bumble Bee (Hymenoptera: Apidae) Foraging Distance and Colony Density Associated With a Late-Season Mass Flowering Crop”, Environmental Entomology, vol. 41, no. 4, pp. 905 - 915, 2012.
, “Abundance and Diversity of Native Bumble Bees Associated with Agricultural Crops: The Willamette Valley Experience”, Psyche: A Journal of Entomology, vol. 20107280810329987810799569116140128941125928531885, no. 1134732, pp. 1 - 9, 2010.
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