Distribution of minor elements in coal beds of the eastern interior region : a study of 15 minor elements in coal beds of Illinois, Indiana, and western Kentucky - Zubovic, Peter 1915-; Stadnichenko, Taisia Maximovna 1894-1958; Sheffey, Nola B. 1929- (Washington : U.S. Government Printing Office, 1964)
"Minor elements in American coals"
Keywords: CARBON; CARBON -- ESTADOS UNIDOS