TY  - BOOK
AU  - Abegunawardane, Piyasena   
AU  - Senarathne, Athula
TI  - Swabavika Sampath saha Parisara Arthika Viddyawa
SN  - 9559761307
U1  - 504 
PY  - 2002///,
CY  - Kasbawa
PB  - Imaduwage Creation
KW  - Economics
KW  - Environmental Economics
ER  -