"http://www.natureserve.org/aboutUs/latinamerica/pubs/Sistemas_low_ENG.pdf". "Online version"@en. . . . . . "Ecological Systems of the Amazon Basin of Peru and Bolivia: Classification and Mapping"@en. . . "2007". . . . . . . . . . . . . . . . . . . . "Source: Freebase - The World's database". . . . . . . .