TY  - RPRT
TI  - Formation and loss of humic substances during decomposition in a pine forest floor
AU  - R.G. Qualls
AU  - A. Takiyama
AU  - R.L. Wershaw
PY  - 2003
DO  - 10.2136/sssaj2003.0899
UR  - https://pubs.usgs.gov/publication/70025678
ID  - 70025678
ER  -