Story | 05 ноя, 2008
Economic Values of Protected Areas - Guidelines for Protected Area Managers
IUCN World Commission on Protected Areas, Task Force on Economic Benefits of Protected Areas ; IUCN, Economics Service Unit ; Cardiff University BPG Nº 2
Story | 04 ноя, 2008
Sustainable tourism in protected areas : guidelines for planning and management
Eagles, Paul F.J. ; McCool, Stephen F. ; Haynes, Christopher D. Best Practice Guidelines Nº 8