00482nam a22001697a 4500003000400000008004100004082001600045100002600061245010100087260004000188300001000228502001100238650002700249650001500276650001100291650001000302OSt240110b        |||||||| |||| 00| 0 eng d  a338.1bS48S  aSingh, Sudhir Prasad.  aStudy of Differential Economics of Irrigation Sources on Family Farms / cby Sudhir Prasad Singh  a.- Sabour, Bhagalpurb: RAUc, 1977  a142p.  bM. Sc.  aAgricultural Economics  aIrrigation  aThesis  aM.Sc.