Estrada, A; Castellanos, L; Franco, B; Ibarra, A; Rivera, A; Fuentes, E; Jimenez, C; García, Y; Muñoz, D
(2002)
A survey of the population of the black howler monkey (Alouatta pigra) present at the Mayan site of Palenque was conducted during 2000. A total of 911 man/hours, spread over 112 days were spent surveying the 600 ha area ...