TY  - GEN
AU  - Kraatz, D. B.
TI  - Irrigation canal lining
SN  - 9251001650
U1  - 627.52 
PY  - 1977///
CY  - Rome
PB  - Food and Agriculture Organization of the United Nation
KW  - Irrigation canal
N1  - Includes references & index
ER  -