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By: Silva, FO. - Kevan, S. D. (Sherrene Dawn), - Roque, Nádia - Viana, Blandina Felipe - Kevan, Peter G.,Type: ArticleIn: Instituto Internacional de EcologiaVolume:Series:Issue:Date: 2010-08-01Page Range:Publication Info: Instituto Internacional de Ecologia 2010-08-01Subjects: Campo Rupestre Convolvulaceae Halictidae Mellitophily