BasaltResearch and Technologic Work on Coal and Related Investigations, 1956Lawrence G. Marshall, A. A. Bakewell, A. C. Johnson, Ednah Harriette Illsley, F. L. Wideman, Hiram Brown Humphrey, J. B. Zadra, James Westfield, John C. Machisak, Michael George Zabetakis, Robert F. Stewart, W. R. Hardwick, Wilbert Leland Dare, United States. Bureau of Mines, C. A. Romano, Harry F. Weaver, Haruo Katō, Naomi W. Kearney, R. Ward Stahl, C. M. Keenan, Elizabeth B. Dixon, H. A. Watson, T. Berry, Hazel M. Keener
