TY  - GEN
AU  - Marasinghe, M.S.L.R.P.
TI  - An estimate of the recreational value of yala national park
SN  - 9559017055
U1  - 333.783 
PY  - 2002///
CY  - Colombo
PB  - The Department of National Planning
KW  - Environment
ER  -