TY  - BOOK
AU  - Walker, Wynn R.
TI  - Surface irrigation: theory and practice 
SN  - 0138779295
U1  - 627.52 
PY  - 1987///
CY  - Englewood Cliffs
PB  - Prentice-Hall
KW  - Irrigation engineering
N1  - Includes references & index
ER  -