TY  - BOOK
AU  - Gustafson, A.F
TI  - Using and Managing Soils
U1  - 631.4 
PY  - 1948///
CY  - New Yark
PB  - McGraw-Hill Book Company, Inc
KW  - Agriculture and related technologies
KW  - Technology (Applied sciences)
KW  - Soil conservation
ER  -