TY  - BOOK
AU  - Troeh, Frederick R.
AU  - Donahue, Roy L.
AU  - Hobbs, J. Arthur
TI  - Soil and water conservation: for productivity and environmental  protection
SN  - 9780138221553
U1  - 631.45 
PY  - 1980///
CY  - Englewoodcliffs
PB  - Prentice Hall
KW  - Agriculture
ER  -