00508     2200181   4500001002100000008004100021035002000062245007300082110001000155260003500165300002500200084002000225082002000245650003300265650001000298990000900308990000900317INLIS000000000003540                                   ing    a0010-0121001906  aSources and Nature of Water Quality problems in Asia and the pacific  aESCAP  aNew YorkbUnited Nationsc1998  cIX, 164p.;ill; 30 cm  a26.174305555556  a26.174305555556  aWATER RESOUCES?WATER QUALITY  aASIA.  a4790  a4790