000			00519 a2200169 4500
020			_a9555731349
041			_aSn
082			_a302.23 _bPER
100			_aPerera , Sunil Sarath
245			_aපරිසරය සහ සන්නිවේදනය = Environment and communication
260			_c1999 _aNugegoda _bSarasavi Prekashana _g2001
300			_bill. _c21 cm. _a[viii],144 p.
650			_aCOMMUNICATION ENVIRONMENTAL ASPECTS
650			_aSOCIOLOGY
650			_aMASS COMMUNICATION ENVIRONMENT
942			_cSC
999			_c29260 _d30807