2 edition of Roof rock structures and related roof support problems in the Pittsburgh coalbeds of southwestern Pennsylvania found in the catalog.
Roof rock structures and related roof support problems in the Pittsburgh coalbeds of southwestern Pennsylvania
Noel N. Moebs
Published
1977
by Dept. of the Interior, Bureau of Mines in [Washington]
.
Written in
Edition Notes
Includes bibliographical references and appendix.
| Statement | by Noel N. Moebs. |
| Series | Report of investigations - Bureau of Mines ; 8230, Report of investigations (United States. Bureau of Mines) -- 8230. |
| Contributions | United States. Bureau of Mines. |
| The Physical Object | |
|---|---|
| Pagination | [2], ii, 30 p. : |
| Number of Pages | 30 |
| ID Numbers | |
| Open Library | OL15214749M |
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