TY  - RPRT
TI  - Nitrogen in rock: Occurrences and biogeochemical implications
AU  - J.M. Holloway
AU  - R.A. Dahlgren
PY  - 2002
DO  - 10.1029/2002gb001862
UR  - https://pubs.usgs.gov/publication/70023841
ID  - 70023841
ER  -