Program: HathiTrust Digital Library
- Publisher: Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey
- Print ISSN: 0160-4759
- Electronic ISSN:
- OCLC Number: 213742687
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
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no.5; no.27; no.36; no.37; no.48; no.54; no.55; no.57; no.65; no.74:A-B; no.74:C-D; no.75; no.84cd; no.84; no.85ab; no.95A; no.96; no.109a; no.119; no.119ab; no.126; no.127; no.129a; no.129c; no.134ab; no.136; no.137; no.146 1976; no.148ab; no.157d; no.164cd; no.168; no.177cd; no.177d; no.178; no.187ab; no.195; no.195c-d; no.197; no.204:abcd; no.205a; no.206; no.214:A; no.214:C; no.214c; no.223
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committed to retain | 2022-01-28 | HTDL |
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