TY  - RPRT
TI  - Chemical characterization of gas- and oil-bearing shales by instrumental neutron activation analysis
AU  - J.K. Frost
AU  - R.F. Koszykowski
AU  - R.C. Klemm
PY  - 1982
DO  - 10.1007/bf02516150
UR  - https://pubs.usgs.gov/publication/70000680
ID  - 70000680
ER  -