Program: HathiTrust Digital Library
- Publisher: Direcção-Geral de Minas e Serviços Geológicos
- Print ISSN: 0370-0623
- Electronic ISSN:
- OCLC Number: 9983234
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
no.7-10 1961-1962; no.15-18 1968-1971
|
committed to retain | 2017-02-16 | HTDL |
|