TY  - BOOK
AU  - Norbert, S. Antony
TI  - Puviyiyal : culaliyal mukamaittuvam
SN  - 9789551857295
U1  - 910.11 
PY  - 2008///
CY  - Colombo
PB  - Chemamadu Poththakasalai
KW  - Environment
KW  - Environmental management
N1  - rs
ER  -