Keywords
- Mineral Industries282
- PAGS Progress Reports190
- Earth and Mineral Sciences189
- Earth and Mineral Sciences Experiment Station Circulars157
- Mineral Industries Experiment Station Bulletin81
- Coal Reserach Section25
- Earth and Mineral Sciences Experiment Station Special Publications19
- Earth and Mineral Sciences periodical14
- Mineral Industries Index14
- Mineral Industries Experiment Station7
- Pennsylvania Department of Mines5
- Newsletter3
- Philosophy3
- Shakespeare3
- Wyomissing Polytechnic Institute3
- ARL2
- Hamlet2
- Mineral Industries Experiment Station Bulletin 2
- Report2
- Textile Machine Works2