Program: HathiTrust Digital Library
- Publisher: Pennsylvania. Bureau of Topographic and Geologic Survey
- Print ISSN:
- Electronic ISSN:
- OCLC Number: 6001005
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
no.80-86; no.94-99(1928); no.100-105(1930-1932); no.106-121(1934-1939)
|
committed to retain | 2019-06-22 | HTDL |
|