TY  - GEN
AU  - Arudpragasam , K.D. 
AU  - Balasooriya , I.
AU  - Coomaraswamy , Uma
AU  - Dassanayake , M.D.
AU  - De Fonseka , R.N.
TI  -  Environmental studies part II the impact of human activities: level 3 BTU 1120
U1  - 333.7 
CY  - Nugegoda
PB  - Open University
KW  - NATURAL RESOURCES
ER  -