Monthly Bulletins.
- Publisher: Observatory printing office
- Print ISSN:
- Electronic ISSN:
- OCLC Number: 490098538
- Subject: Geomagnetism Philippines.
- Subject code: QC
- Publication history:
Print Holdings
Archiving Institution | Program | Holdings Description | Retention |
---|---|---|---|
HathiTrust (HATHI) | HTDL | 1901; 1903-1913; 1913-1914; 1914-1915; 1915-1916; 1916-1917; 1917-1918; 1918-1922; 1924; 1925 Jan-Apr; 1925 May-Aug; 1925 Sep-Dec | permanent |