@book {, title = {Geo-ecology of the mountainous regions of the tropical Americas}, year = {1968}, note = {Symposium on the Geo-ecology of the Mountainous Regions of the Tropical Americas (1966 : Mexico City, Mexico)Edited by Carl Troll.Colloquium Geographicum, Bd. 9"Proceedings of the UNESCO Mexico symposium, August, 1-3, 1966, organized under the sponsorship of the UNESCO Natural Resources Research Division in connection with the Latin America Regional Conference (LARC) of the International Geographical Union."Part of illustrative matter fold. in pocket.Includes bibliographical references.Geo-ecologia de las regiones monta{\~n}osas de las am{\'e}ricas tropicales.Colloquium geographicum ; Bd. 9.}, pages = {223}, publisher = {D{\"u}mmler in Kommission}, organization = {D{\"u}mmler in Kommission}, address = {Bonn}, keywords = {Mountain ecology Latin America Congresses, Plant ecology Latin America Congresses, Soils and climate Congresses}, author = {Troll, Carl}, editor = {United Nations Educational Scientific and Cultural Organization. Natural Resources Research Division} }