TY  - BOOK
AU  - Allison, F. E.,
TI  - Soil Organic Matter and Its Role in Crop Productions
SN  - 0444410171
U1  - 631 
PY  - 1973///
CY  - Amsterdam
PB  - Elsevier Scientific Publishing Company
KW  - Soil Organic
KW  - Techniques, equipment & materials
ER  -