RUIZ, A.; ALFARO, M. Notes on Costa Rican Opalinids. Il. Zelleriella antillensis ( Metcalf) and Z. bufoxena Metcalf. Revista de Biología Tropical, [S. l.], v. 7, n. 2, p. 219, 1959. DOI: 10.15517/rev.biol.trop.1959.29949. Disponível em: https://revistas.ucr.ac.cr/index.php/rbt/article/view/29949. Acesso em: 7 may. 2024.