TY  - RPRT
TI  - N-15 NMR spectra of naturally abundant nitrogen in soil and aquatic natural organic matter samples of the International Humic Substances Society
AU  - K. A. Thorn
AU  - L.G. Cox
PY  - 2009
DO  - 10.1016/j.orggeochem.2009.01.007
UR  - https://pubs.usgs.gov/publication/70035002
ID  - 70035002
ER  -