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  found 1 countries with filter 1111,x,x: Gravimetry

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

GDR 1980

Stamp showing.....
1zzz


Categories1: Gravimetry


Attributes and External Links:
https://agilescientific.com/blog/2011/5/24/geophysical-stamps.html

GDR 1980

4 Stamp showing.....
5zzz5


Categories2: Gravimetry,Seismics,Seismology,Seismology.Instruments,,Seismology.Seismograms


Attributes and External Links:

Philatelic Objcts with topic: Gravimetry on 25.06.2021