Microscopic study of Elkhorn coal bed at Jenkins, Letcher County, Ky.
| Other author | O'Donnell, H. J. (Hugh J.) |
| Other author | Sprunk, George C. |
| Other author | Thiessen, Reinhardt, 1867-1938. |
| Format | Microform |
| Publication Info | [Washington?] : U.S. G.P.O., 1931. |
| Description | iii, 30 pages ; cm. |
| Subjects |
| Series | Mines Bur. Technical Paper No. 506 |
| General note | Reuse of record except for individual research requires license from LexisNexis Academic & Library Solutions. |
| General note | [With data on chemical properties] |
| Citation/References note | CIS Index to U.S. Executive Branch Documents, 1910-1932 Part 2 |
| Reproduction note | Joyner- Microfiche. [Bethesda, Md.]: LexisNexis Academic & Library Solutions, 1997, 11 x 15 cm. (CIS US Executive Branch Documents : no. C22.5-506) |
| Govt. docs number | C 22.5:506 |
| Govt. docs number | I 28.7:506 |