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Teertstra, D.K., Cerný, P. and Hawthorne, F.C. (1999c) Rubidium-rich feldspars and associated minerals from the Luolamäki Pegmatite, Somero. Bulletin of the Geological Society of Finland 1999, 43-49.
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Teertstra, D.K., Cerný, P. and Hawthorne, F.C. (1999c) Rubidium-rich feldspars and associated minerals from the Luolamäki Pegmatite, Somero. Bulletin of the Geological Society of Finland 1999, 43-49.