TY  - BOOK
AU  - Troeh, Frederick R 	
AU  - Hobbs, J. Arthur 
AU  - Donahue, Roy I
TI  - Soil and water conservation for productivity and environmental protection /			
U1  - 631.4 TRO 
PY  - 1980///
CY  - New Jersey : 
PB  - Prentice Hall, 	
N1  - Includes Index
ER  -