Author Details for "Toenges, A.L."
| Title | Author(s) | Publication | Year | Online Access |
|---|---|---|---|---|
| Longwall mining methods of the middle western states | Toenges, A.L. | U.S. Bureau of Mines, Information Circular no. 6893, 62 pages | 1936 | N/A |
| Title | Author(s) | Publication | Year | Online Access |
|---|---|---|---|---|
| Longwall mining methods of the middle western states | Toenges, A.L. | U.S. Bureau of Mines, Information Circular no. 6893, 62 pages | 1936 | N/A |