LÜDERT, Hugo. Über hexametaphosphorsaure Salze. Inaugural-Dissertation. 1893.

First edition of this thesis on chemistry
With 17 other inaugural dissertation for obtaining doctorate.(1929-1949. All in German, from Leontyna Mamlok, Peter Leiser, Georg Läufer, August Grüne, Max Heilmann, Oskar Riester, Bernhard Cyriac, Johann Porges, Hans, Rikli, Kurt Tauss, Johann Porges, Hans Rikli, Walter Jenny, Muvaffak Seyhan, Wilhelm L. Steven, Baboo Mehta, Eduard J. Schubert, Gustav Renckhoff, R. Wisinger.