TY  - BOOK
AU  - Troll,Carl
ED  - Proceedings of the Unesco symposium: Geo-ecology of the mountainous regions of the tropical Americas
TI  - Geo-ecología de las regiones montañosas de las Américas tropicales
T2  - Colloquium geographicum, 9
PY  - 1968///
CY  - Bonn
PB  - UNESCO, Natural resources research division, Latin America regional conference-LARC, International geographical union
N1  - bibliogr
ER  -