003050000a22001330004500020001800000060000800018082001400026100001700040245003700057260004500094260000900139300000800148650001500156  a0 7069 0613 6  a100  a631.7 MIC  aMichael, A M  aIrrigation : Theory and practice  aNewdelhi, Vikas Publishing House Pvt Ltd  c1978  a801  aIrrigation