Search U.S. government technical reports digitized or harvested by TRAIL.
Bibliography of Bureau of Mines investigations of coal and its products :1935 to 1940
Bibliography of Bureau of Mines investigations of coal and its products,1940 to 1945
Bibliography of Bureau of Mines investigations of coal and its products, 1950 to 1955
Bibliography of Bureau of Mines investigations of coal and its products, 1910-60