Rare and Uncommon Chemical Elements in Coal, by F. H. Gibson and W. A. Selvig F. H. Gibson Published: 1944 Total Pages: 23 Get eBook
Rare and Uncommon Chemical Elements in Coal Francis Harold Gibson Published: 1944 Total Pages: 28 Get eBook
Technical Paper - Bureau of Mines United States. Bureau of Mines Published: 1943 Total Pages: 1606 Get eBook
Geochemistry of Minor Elements in Coals of the Northern Great Plains Coal Province Peter Zubovic Published: 1961 Total Pages: 226 Get eBook
Technology of Lignitic Coals United States. Bureau of Mines Published: 1954 Total Pages: 134 Get eBook