Search U.S. government technical reports digitized or harvested by TRAIL.
Report on investigations by fuels and lubricants teams at the Wintershall A.G., L©·utzkendorf, near M©·ucheln, Germany
Report on the investigations by fuels and lubricants teams at the I.G. Farbenindustrie, A.G., works, Ludwigshafen and Oppau
Average heating values of American coals :by rank and by states