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Helsinki: Suomalainen Tiedeakatemia, 1969
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Geozon Science Media, 1979-01-01
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Geozon Science Media, 1982-01-01
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Geozon Science Media, 1973-10-15
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Geozon Science Media, 1982-01-01
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Geozon Science Media, 1982-01-01
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Geozon Science Media, 1982-01-01
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Geozon Science Media, 1981-01-01
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GEO-LEOe-docs (FID GEO), 2003
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The Geological Society of Finland, 1974