TY  - BOOK
AU  - Butler B E
TI  - Soil classification for soil survey
T2  - Monographs on soil survey
U1  - U672(J:1), M0 
PY  - 1980///
CY  - Oxford
PB  - Oxford University Press        
KW  - Agricultural Geography
N1  - Bib p. 123-26
ER  -