003250000a22001210004500060000800000082001900008100001500027245004200042260004900084260000900133300000800142650005300150  a100  a338.106  8 SIN  aSingh, I J  aElements of farm management economics  aNewdelhi, Affiliated East West Press Pvt Ltd  c1977  a132  aFarm management/farm management-economic aspects