HEDSTRÖM, I.; DENZEL, A.; OWENS, G. Orchid bees as bio-indicators for organic coffee farms in Costa Rica: Does farm size affect their abundance?. Revista de Biología Tropical, [S. l.], v. 54, n. 3, p. 965–969, 2006. DOI: 10.15517/rbt.v54i3.14075. Disponível em: https://revistas.ucr.ac.cr/index.php/rbt/article/view/14075. Acesso em: 17 jul. 2024.