TY  - BOOK
AU  - United States. Dept. of agriculture. Bureau of plant industry soils, and agricultural engineering. Soil survey staff.
TI  - Soil survey manual
U1  - 631.4773/UNI 
PY  - 1951///
CY  - New York
PB  - Agricultural Research Administration
KW  - soil survey
KW  - soils
ER  -