By Passarge, Siegfrid.
Barcelona : Labor, 1931 .
189 p. : , p.183. 19 cm.

By Sievers, Wilhelm.
Barcelona : Labor, 1931 .
207 p. : 18 cm.

By Melon R. de Gordejuela, Amando.
Barcelona : Labor, 1933 .
224 p. : 18 cm.

By Gunther, Siegmund.
Barcelona : Labor, 1940 .
192 p. : 18 cm.

By Machatschek, Fritz.
Barcelona : Labor, 1933 .
382 p. : 18,5 cm.

By Moscheles, J..
Barcelona : Labor, 1929 .
219 p. : 18 cm.

By Lehmann, F. W. Paul.
Barcelona : Labor, 1929 .
198 p. : 18 cm.

By Scheu, Erwin.
Barcelona : Labor, 1943 .
190 p. : 18 cm.

By Friederichsen, Max.
Barcelona : Labor, 1930 .
199 p. : 18 cm.

By Kerp, Heinrich.
Barcelona : Labor, 1930 .
338 p. : 18 cm.

By Walser, Hermann.
Barcelona : Labor, 1929 .
203 p. : 18 cm.

By Kühn, Franz.
Barcelona : Labor, 1947 .
202 p. : 18 cm.

By Machatschek, Fritz.
Barcelona : Labor, 1933 .
470 p. : 18,5 cm.