TY  - BOOK
AU  - Troeh, Frederick
AU  - Hobbs, j. arthur
TI  - Soil and Water Conservation- For productivity and Environmental Protection
SN  - 0138221553
U1  - 631.45 TRO 
PY  - 1980///
CY  - New jersey
PB  - Prentice Hall
KW  - Soil Conservation
ER  -