00585nam a2200157Ia 4500 140224s9999 xx 000 0 und d 330.19:631.675:519.2 L8 Hexem, Roger W. Water production functions for irrigated agriculture Iowa Iowa State University Press c 1978 xvi,215p. Roger W.Hexem and Earl O.Heady. Heady, Earl O. Irrigated farming-economic aspects-Mathematical models,Irrigated farming-economic aspects-the west,Production functions(Economic theory) BK 0 0 0 0 KSD KSD 2014-02-24 0 330.19:631.675:519.2 L8 1923 2014-02-24 00:00:00 2014-02-24 BK 97173 97173