TY  - BOOK
AU  - Schwab, Glenn O..
TI  - Soil and water conservation engineering / 
SN  - 0-471-09423-4
U1  - J:1(D) 
PY  - 1973///
CY  - New York : 
PB  - John Wiley & Sons,Inc. , 
KW  - Agriculture
ER  -