TY  - GEN
AU  - Troll,Carl
ED  - Proceedings of the Unesco symposium: Geo-ecology of the mountainous regions of the tropical Americas
TI  - The Cordilleras of the tropical Americas: aspects of climatic, phytogeographical and agrarian ecology
T2  - Colloquium geographicum, 9
N1  - bibliogr. p. 54-55
ER  -