Directory of the mineral industry in Pennsylvania.
- Publisher: Pennsylvania Geological Survey
- Print ISSN:
- Electronic ISSN:
- OCLC Number: 5304122
- Subject: Mineral industries Pennsylvania Directories.
- Subject code: QE
- Publication history: [1st ed.]-3rd ed.
Print Holdings
| Archiving Institution | Program | Holdings Description | Retention |
|---|---|---|---|
| HathiTrust (HATHI) | HTDL | 1977 | permanent |