http://pec.lib.wvu.edu/record/P3746undatedLow temperature oxidation of coal. Serial issue. Issued as: West Virginia University. Coal Research Bureau. <em>Technical report</em>, no.25. "Published in Fuel, 47, 177 (1968)". Leonard, Joseph W.Kona, Narasimha Rao, 1936-Fairbanks, Harold Vincent, 1915-Coal--Analysis.Oxidation.14256