TY  - BOOK
AU  - Allison, F.E
TI  - Soil organic matter and its role in crop production
T2  - Developments in soil science
SN  - 0444410171
U1  - 631.417 
PY  - 1973///
CY  - Amsterdam
PB  - Elsevier
KW  - Soil science
ER  -