TY  - BOOK
AU  - Donahue, Roy L.
AU  - Troeh, Frederick R.
TI  - Soil and water conservation
SN  - 013830324X
U1  - 631.45 21st ed.
PY  - 1991///
CY  - New Jersey
PB  - Prentice-Hall
KW  - Soil conservation
KW  - Soil erosion
KW  - Water conservation
ER  -