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Melo, A.M.C., Viana, B.F. and Neves, E.L. 2002. Pattern of floral resource use by two species of Melipona Illiger, 1806 (Hymenoptera: Apidae) in continental sand dunes from medium São Francisco River, Bahia, Brazil. SITIENTIBUS série Ciências Biológicas. 2, 1/2 (Jun. 2002), 17–22. DOI:https://doi.org/10.13102/scb8230.