Industrial studies of Pennsylvania slate production /
| Main Author: | |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
State College Pa. :
School of Mineral Industries,
[1951]
|
| Series: | Bulletin (Pennsylvania State University. Earth and Mineral Sciences Experiment Station) ;
58. |
| Subjects: |
| Physical Description: | 43 pages : illustrations, maps. |
|---|---|
| Bibliography: | Bibliography: page 42. |