TY  - GEN
AU  - Gunawardhana , Asoka
TI  - à¶´à¶»à·à·à¶»à¶ºà¶ºà· à·à·à¶±à·à¶¯à¶ºà¶ºà·
SN  - 9559661019
U1  - 333.7 
PY  - 2001///
CY  - Matara
PB  - Author
KW  - NATURAL SCIENCE
KW  - ENVIRONMENT
ER  -