TY  - BOOK
AU  - United Nations
TI  - A Preliminary study on environmental management of tourism development in the escap region 
SN  - Economic and Social Commission for Asia and the Pafic.
U1  - 333.7 PRE 
PY  - 1992///
CY  - New York 
PB  -  United Nations
KW  - Environment
ER  -