TY  - GEN
AU  -   Schwab, Glenn O.
AU  -   Frevert, Richard K.
AU  -   Barnes, Kenneth K.
TI  - Manual od soil and water conservation engineering
U1  - 631.4 
PY  - 1952///
CY  - Iowa
PB  - WM. C. Brown
KW  -   Conservation of rural resources
KW  -   Soils
KW  -   Water
KW  -   Engineering
ER  -