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Evidence for decline in eastern North American bumblebees (Hymenoptera: Apidae), with special focus on Bombus affinis Cresson

BiologyTerrestrial ArthropodArthropod TaxonomyEngineeringNatural SciencesInsect ConservationEntomologyEvolutionary BiologySpecial FocusPest ManagementBombus Affinis CressonConservation Biology