TY  - BOOK
AU  - Roger W. Hexem
AU  -  Earl O. Heady, 
TI  - Water production functions for irrigated agriculture
SN  - 0-8138-1785-4
U1  - 631.7 
PY  - 1978///
CY  - Ames
PB  - Iowa State University Press
N1  - Roger W. Hexem & Earl O. Heady: Water production functions for irrigated agriculture.  Ames.  Iowa State University Press, 1978. 0-8138-1785-4--(631.7HEX)
ER  -