Info Links Systematik (geology and mineralogy-geochemistry) University Library Tips for Database Search (in german) GeoRef Online-cataloge (UB Freiburg und SW-Verbund) Geoscience World Lyell Collection Newcomers Electronic journals Historic "Geologenarchiv" (with catalog search) Naturforschende Society Freiburg Freundeskreis Geowissenschaften Freiburg i. Br.