J. GRABANDT , RENETTA A. “DESCRIPTION OF SOME TAXA OF TESTACEA OF HUMID PARAMO VEGETATION TYPES OF THE COLOMBIAN CORDILLERA ORIENTAL ”. Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales 15, no. 58 (December 31, 1983): 31–40. Accessed April 30, 2026. https://raccefyn.co/index.php/raccefyn/article/view/3778.