Creation
Geomagnetic Observatory
Issue number
039 COB 001/00 Date of issue
12.06.2000
039 COB 001/00 Date of issue
12.06.2000
Heinrich von Stephan
Issue number
023 COB 001/97 Date of issue
18.09.1997
023 COB 001/97 Date of issue
18.09.1997
Móric Beňovský
Issue number
014 COB 001/96 Date of issue
20.09.1996
014 COB 001/96 Date of issue
20.09.1996
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