Preliminary training and education of mine officials /
| Main Author: | |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
State College, Pa. :
Pennsylvania State College, School of Mineral Industries,
1943.
|
| Series: | E & MS experiment station circular ;
no. 15. |
| Subjects: |
| Physical Description: | 9 pages |
|---|