TY  - SER
AU  - Laarman,Jan G.
TI  - Nature-oriented tourism in Costa Rica and Ecuador: Diagnosis of research needs and project opportunities 
U1  - 338.4791 23
PY  - 1987///
KW  - Ecoturismo
KW  - Ecotourism
N2  - BIB Now: 4376
ER  -