TY  - BOOK
AU  - Bureau of Plant Industry, Soils and Agricultural Engineering, Soil Survey Staff.
TI  - Soil survey manual
T2  - U.S. Department Agriculture, Handbook; no.18
U1  - 631.473(02) J1 
PY  - 1951///
CY  - Calcutta
PB  - Oxford, IBH
KW  - Soil survey
ER  -