Über die Prismenmethode zur Bestimmung der Brechungsindizes optisch zweiachsiger Kristalle ohne Absorptions- und Drehungsvermögen. Mitteilungen der Naturforschenden Gesellschaft in Freiburg. Vol. IV. Heft 1. Mémoires de la Société Fribourgeoise des Sciences Naturelles. Vol. IV. Mathématiques et Physique.

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