- 1Martin J. Gavin
Oil-shale : an historical, technical, and economic study
Denver (CO): The Bradford-Robinson printing co 1922; xii, 201 p. : 1 ill., 18 pl. (5 fold.) on 15 l. (incl. 2 fold. plans, 2 fold. diagr.) tables (1 fold.) diagrs. (2 fold.)
Ölschiefer - 2Martin J. Gavin; H. H. Hill; W. E. Perdew; Bureau of Mines
Notes on the oil shale industry with particular reference to the Rocky Mountain district
Washington, D.C.: 1919; 51 Bl.
Erdölindustrie; USA