Its Informe final, 1999: t.p. (Proyecto de Monitoreo de la Cuenca del Canal de Panamá (PMCC))

Its Final report, 1999: t.p. (Panama Canal Watershed Monitoring Project (PMCC))

Smithsonian Tropical Research Institute Web site, Dec. 26, 2000 (Panama Canal Monitoring Project; Proyecto Monitoreo de la Cuenca del Canal; Proyecto de Monitoreo Ecológico de la Cuenca del Canal de Panamá; Panama Canal Watershed Ecological Monitoring Project; Proyecto de Monitoreo de la Cuenca del Canal de Panamá (PMCC); financed by the US Agency for International Development and executed by the Smithsonian Tropical Research Institute in close collaboration with the National Authority for the Environment (ANAM))