6
by Zerwer, Antonie, Langstein, Leo
Published 1925
Springer Berlin Heidelberg

9
by Langstein, Leo, Meyer, Erich, Schittenhelm, A.
Published 1927
Springer Berlin Heidelberg

11
by Hammerschlag, Sigfrid, Langstein, Leo, Ostermann, Arthur
Published 1928
Springer Berlin Heidelberg

12
by Zerwer, Antonie, Kühl, Paul, Langstein, Leo
Published 1926
Springer Berlin Heidelberg

13
by Zerwer, Paul, Langstein, Leo, Kühl, Paul
Published 1940
Springer Berlin Heidelberg

14
by Zerwer, Antonie, Kühl, Paul, Langstein, Leo
Published 1921
Springer Berlin Heidelberg

16
by Langstein, Leo, Meyer, Erich, Schittenhelm, A., Burgsch, Th
Published 1914
Springer Berlin Heidelberg