World Heritage
Plan de manejo y desarrollo del monumentos nacional Ruinas de Copán : sitio de Patrimonio Cultural Mundial
1984
Barborak, James R. |
Morales, Róger |
MacFarland, Craig |
Maasailand ecology : pastoralist development and wildlife conservation in Ngorongoro, Tanzania
1991
Homewood, K. M. |
Rodger, W. A. |
Areas naturales protegidas de Mexico
1993
Colosio, Luis Donaldo |
Bibliography of the Great Barrier Reef province
1978
Frankel, Edgar |