@article{67849, recid = {67849}, title = {Forms and volatilities of trace and minor elements in coal.}, publisher = {Illinois Dept of Energy and Natural Resources, Illinois State Geological Survey,}, address = {Champaign, Ill. :}, pages = {29 p. :}, year = {1982}, note = {"September 1982." -- Cover, p. 1.}, url = {http://library.usi.edu/record/67849}, }