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http://itrf.ensg.ign.fr
http://itrf.ensg.ign.fr
http://itrf.ensg.ign.fr
International Terrestrial Reference Frame
P856
Q20820222-ea1f0d5d-442a-02d4-50fd-f23c47c0134d
P856
http://itrf.ensg.ign.fr
http://itrf.ensg.ign.fr