egal...
 Disasters induced by geophysical effects
Earthquakes Tsunamis
 1957/58 : IGY-Campaign
IGY: International Geophysical Year
 Congresses of Geophysical interest
IUGG: Int.Union Geodesy Geophysics Other Congresses & Meetings
 Geophysically relevant cruises of ships
Cruises of Ship Polarstern
 Geophysically relevant surveys in polar regions
Arctic Antarctica


  found 2 countries with filter 1111,x,x: Seismology.Instruments

General Geophysics on Stamps - Allgemeine Geophysik auf Briefmarken - Géophysique sur les timbres - Selected topic(s): Seismology.Instruments

China 1953



Categories1: Instruments.Seismometer,Seismology,Seismology.Instruments


Attributes and External Links:

GDR 1980

4 Stamp showing.....
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Categories2: Gravimetry,Seismics,Seismology,Seismology.Instruments,,Seismology.Seismograms


Attributes and External Links:

Philatelic Objcts with topic: Seismology.Instruments on 09.05.2021