![Fig. 28: Difficult case, 1927 Fig. 28: Difficult case, 1927](/sites/default/files/styles/image_style_desktop/public/assets/images/28%20Schwieriger%20Fall%201927.jpg?itok=P4D-ApcO)
Universitätsbibliothek Heidelberg, http://digi.ub.uni-heidelberg.de/diglit/ulk1927/0230
Description (Inactive)
Difficult case. In: Ulk. Weekly Publication of the Berliner Tageblatt, 56th Edition, No. 30, 29 July 1927, page 230