Directions for magnetic measurements /
- Publisher: U.S. G.P.O.
- Print ISSN:
- Electronic ISSN:
- OCLC Number: 11856381
- Subject: Geomagnetism Observers' manuals.
- Subject code: QC
- Publication history: [1st ed.]-
Print Holdings
| Archiving Institution | Program | Holdings Description | Retention |
|---|---|---|---|
| HathiTrust (HATHI) | HTDL | 1911 1911; 1921 1921 | permanent |