TY  - RPRT
TI  - Metal content of twenty-four petroleums
AU  - J.S. Ball
AU  - W.J. Wenger
AU  - H.J. Hyden
AU  - C. A. Horr
AU  - A.T. Myers
PY  - 2002
DO  - 10.1021/je60008a038
UR  - https://pubs.usgs.gov/publication/70010771
ID  - 70010771
ER  -