000 00328nam a2200121Ia 4500
008 161118s2016 xx 000 0 und d
082 _a333.913 H3W2
100 _aHexem,Roger W.
245 0 _aWater production function for irrigated agriculture
260 _aAmes
_bIowa stat Univ. Press
_c1978
300 _a215p.
942 _2ddc
999 _c12657
_d12657