Guidelines : development of national parks and protected areas for tourism.
- Madrid, Spain ; Paris, France : World Tourism Organization ; United Nations Environment Programme, 1992.
- ii, 53 p. : col. ill.
928440260
National parks and reserves--Reservation systems.
National parks and reserves.
Ecotourism.
928440260
National parks and reserves--Reservation systems.
National parks and reserves.
Ecotourism.