Geomagnetic data.
- Publisher: IUGG Publications Office
- Print ISSN:
- Electronic ISSN:
- OCLC Number: 6887966
- Subject: Geomagnetism Observations.
- Subject code: QC
- Publication history: 1940/46-
Print Holdings
| Archiving Institution | Program | Holdings Description | Retention |
|---|---|---|---|
| HathiTrust (HATHI) | HTDL | 1940-1947; 1949-1955 | permanent |