TY  - RPRT
TI  - 13C-NMR spectra and contact time experiment for Skjervatjern fulvic and humic acids
AU  - Ronald L. Malcolm
PY  - 1992
DO  - 10.1016/0160-4120(92)90028-3
UR  - https://pubs.usgs.gov/publication/70016823
ID  - 70016823
ER  -