TY  - BOOK
AU  - Doorenbos, J  .
AU  - Pruitt,W O  .
TI  - Guidelines for predicting crop water requirements / 
SN  - 92-5-10279-7
U1  - 631.5874 
PY  - 1992///
CY  - Rome : 
PB  - Food and Agriculture organization of United States , 
ER  -