x, 201 p.; incl. tables, diagrs. 18 pl. (incl. front., 3 fold plans, 2 fold. diagr.); 24 cm.
Oil shale: an historical, technical and economic study / by Martin J. Gavin.
U. S. Bureau of mines; Bulletin; 210.
At head of title: ... Department of the interior. Hubert Work, Secretary. Bureau of mines. H. Foster Bain, director. "Selected bibliography. Compiled by Elizabeth H. Burroughs. Selected by Martin J. Gavin": p. 185-194. 34922
Colorado. Co-operative oil shale investigation.; United States. Bureau of Mines.; Burroughs, Elizabeth Harding., Washington; Govt. Print. Off., 1924