003100000a22001210004500060000800000082001600008100001700024245004600041260004300087260000900130300000800139650004100147  a100  a631.403 BAL  aBalvir Varma  aDictionary of soil and water conservation  adelhi, Metropolitain book co. pvt. ltd  c1984  a118  aSoil conservation/water conservation