TY  - BOOK
AU  - Buol, S.W..
TI  - Soil genesis and classification / 
SN  - 0-8138-1460-X
U1  - J:17 
PY  - 1980///
CY  - Ames : 
PB  - The Iowa State University Press , 
KW  - Soils- Classification
ER  -