TY - RPRT TI - Distribution of minor elements in coals of the Appalachian region AU - Peter Zubovic AU - Taisia Maximovna Stadnichenko AU - Nola B. Sheffey PY - 1966 DO - 10.3133/b1117c UR - https://pubs.usgs.gov/publication/b1117C ID - b1117C ER -