00397nam a2200181Ia 4500008004100000082000800041082000800049100001800057245004200075260003000117260000900147300001700156365000600173365001100179365000600190365000600196650001300202181031s9999    xx            000 0 und d  a696  bRAN  aRangwala S.C.  aWater Supply and Sanitary Engineering  bCharotar Publishing House  c1997  axviii; 797p.  b0  cRupees  d0  e0  aServices