TY  - GEN
AU  - Heady, Earl O
AU  - Hexen, Roger W
TI  - Water production functions for irrigated agriculture
SN  - 0-8138-1785-4
U1  - 631.7 HEX 
CY  - U S A, The IOWA State University  press
KW  - water production / water irrigated agriculture / irrigated farming
ER  -