TY  - RPRT
TI  - Geochemistry of minor elements in coals of the Northern Great Plains coal province
AU  - Peter Zubovic
AU  - Taisia Maximovna Stadnichenko
AU  - Nola B. Sheffey
PY  - 1961
DO  - 10.3133/b1117a
UR  - https://pubs.usgs.gov/publication/b1117A
ID  - b1117A
ER  -