TY  - BOOK
ED  - E.U.A. Bureau of Plant Industry, Soils and Agricultural Engineering
TI  - Soil survey manual
T2  - Agriculture handbook
U1  - 631.47 
PY  - 1951///
CY  - Washington
PB  - Department of Agriculture
KW  - Suelos
KW  - E.U.A
ER  -