WILLE, A. Behavioral adaptations of bees for pollen collecting from Cassia flowers. Revista de Biología Tropical, [S. l.], v. 11, n. 2, p. 205–210, 1963. DOI: 10.15517/rev.biol.trop.1963.31234. Disponível em: https://revistas.ucr.ac.cr/index.php/rbt/article/view/31234. Acesso em: 8 may. 2024.