Universitt̃ Gt̲tingen. Sternwarte.
Universitt̃ Gt̲tingen Terrestrial Magnetic Observatory records, 1850-1933.
Astronomy -- Observations
Astronomical observatories -- Germany -- Documentation.
Geomagnetism -- Observations.
Geomagnetic observatories -- Germany -- Documentation
Universitt̃ Gt̲tingen. Erdmagnetisches Observatorium.
AIP-ICOS
Universitt̃ Gt̲tingen. Universitt̃archiv. Gosstestrasse 12a, 3400 Gt̲tingen