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 - 0-13-822-155-3 U1 - 344.046 TRO PY - 1980/// CY - New Jersey PB - Prentice Hall KW - Environmental Law (344.046) ER -