TY  - BOOK
AU  - Webster R
AU  -  Oliver M A
TI  - Statistical methods in soil and land resource survey
SN  - 0198233175
U1  - J:1:(B28), L7;N0 
PY  - 1990///
CY  - Oxford
PB  - Oxford University Press        
KW  - Agriculture
N1  - Bibliography:p.299-307; Appendix:p.291-98
ER  -