00425nam a2200157Ia 4500008004100000082001700041100001400058245006100072260004100133300000800174650001400182650002000196653002200216653001400238653001500252170901s1977    xx            000 0 und d  a333.91bK98E  aKumar, P. 0aEconomics of Water ManagementbA Study of Field Channels  aNew DelhibHeritage Publishersc1977  a118  aEconomics  aSocial sciences  aAgricultural land  aEconomics  aIrrigation