TY  - BOOK
AU  - Webster, R.
TI  - Quantitative and numerical methods in soil classification and surveys
SN  - 019854512 6
U1  - 631.47 
PY  - 1977///
CY  - Oxford
PB  - Clarendon Press
KW  - Soil -
KW  - Soil Science - Soil and Land use surveys -
N1  - Includes references and index
ER  -