Statistisch-biostratigraphische Untersuchungen an mitteljurassischen Ammoniten über Artbegriff und Stammesentwicklungen (Abhandlung d. Ges. f. Wiss. zu. Göttingen MAth.-phsy. N.F. Bd. 13,3)

History of loss: stored at Michaelstein, Harz. Destroyed by bombing or the effects of war or could no longer be found after 1945. Return in June/July 1945 only partially successful. The volumes listed are still missing today. Lost by the Soviet Military Administration of Saxony-Anhalt in 1948. Presumably (!) today in the Russian National Library, St. Petersburg.