00313nam a2200109Ia 4500082002400000100001700024245008600041260004500127300002100172500000500193700000500198  a338.160954bP295.IP  aPatel, N. T.  aInputs productivity in agriculture with an emphasis on irrigation and farm sizeb  aNew DelhibOxford University Pressc1982  axii, 226p. Bibl.  a  a