TY  - BOOK
AU  - Western, S..
TI  - Monographs on soil survey:Soil survey contracts and quqlity control / 
SN  - 0 19 854513 4
U1  - J:1:U 
PY  - 1980///
CY  - London : 
PB  - Oxford university Press , 
KW  - Agriculture<
ER  -