000 00447 a2200169 4500
020 _a9789556570809
041 _aSn
082 _a333.91
_bVIT
100 _aVithana , Shantha Kumara
245 _aලෝකයේ ලස්සන දි‍ය ඇලි
260 _c2007
_aMudungoda
_bTharanga Prakashakayo
_g2007
300 _bphoto
_c22 cm.
_a187 p.
650 _aECONOMICS
650 _aWATER RESOURCES
650 _aWATERFALLS
942 _cSC
999 _c30524
_d32071