1
by Ehrenberg, Richard, 1857-1921.
Published 1883
Book
2
by Bourguin, Maurice
Published 1906
Book
6
by Neurath, Otto 1882-1945
Published 1909
Book
7
by Neurath, Otto, 1882-1945.
Published 1909
Book
8
Book
11
by Steinmann-Bucher, Arnold 1849-
Published 1917
Book
13
by Neurath, Otto 1882-1945
Published 1918
Book
15
by Neurath, Otto, 1882-1945.
Published 1918
Book
16
Published 1919
Book
18
Book
19
Book
20
by Sieveking, Heinrich 1871-1945
Published 1921
Book