TY  - BOOK
ED  - World Tourism Organization
ED  - United Nations Environment Programme
TI  - Guidelines: development of national parks and protected areas for tourism 
SN  - 9284400260
U1  - 910.202 
PY  - 1992///
CY  - Madrid
PB  - WTO
KW  - Tourist trade
KW  - Tourism
KW  - Travel
N1  - Bibliography: p. 51-53
ER  -