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- Site Map Research activities Research services Exploration info Information services Addresses and telephones Data available Links Search General information Meetings & Projects Suomenkieliset sivut Image: Diamond from Kaavi, Central Finland. Actual size 0.6 mm. (Photo: Kari A. Kinnunen) Geological Survey of Finland Welcome to our virtual library. The Geological Survey of Finland (GTK) is a ...www.gsf.fi
