003020000a22001330004500020001500000060000800015082001400023100001700037245003700054260004500091260000900136300000800145650001500153  a0706943988  a100  a631.7 MIC  aMichael, A M  aIrrigation : Theory and practice  aNewdelhi, Vikas Publishing House Pvt Ltd  c1978  a801  aIrrigation