Oil-shale : an historical, technical, and economic study

by Martin J. Gavin. State of Colorado co-operative oil-shale investigations ...

Denver (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.)

210

Bulletin; 210