TY  - BOOK
AU  - Harpstead, M.I.
AU  - Bennett,William F.
AU  - Sauer,Thomas J/
TI  - Soil science simplified
SN  - 813815045
U1  - 631.4 
PY  - 1997///
CY  - Iowa
PB  - Iowa State University Press
KW  - Agriculture
KW  - Earth sciences
KW  - Soil management
ER  -