TY  - GEN
ED  - Terrestrial ecosystes Branch Industry and Environment Programme Activity Centre.
ED  - United Nations Environment Programme.
ED  - World Tourism Organization. (WTO).
TI  - Gudelines development of national parks and prtotected areas for tourism
SN  - 9284400260
PY  - 1992///
CY  - Madrid, Spain
PB  - World Tourism Organization
KW  - National parks and reserves
N1  - Includes bibliographical references (51-53) and index
ER  -