TY  - BOOK
AU  - Frevert, R.K.
TI  - Soil and water conservation engineering
SN  - 0 471 76520 1
U1  - 626.8 
PY  - 1966///
CY  - New York
PB  - John Wiley
KW  - Soil conversevation
KW  - Irrigation Engineering
ER  -