| http://www.w3.org/ns/prov#value | - It is an active member of the International Association of Geodesy and Geophysics (IUGG) which itself is a member of the International Council for Science (ICSU).The IAG has a long and distinguished history that goes back to 1862, the year, in which the Mitteleurop??ische Gradmessung was established.
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