Authors: Albrecht, Fritz --- Duckert, P. --- Grundmann, W. --- Grunow, J. --- Jensen, Chr. --- et al. Kähler, K. --- Kleinschmidt, Ernst --- Kopp, W. --- Kühl, W. --- Reger, J. --- Robitzsch, M. --- Süring, R.
Year: 1935 Publisher: Berlin Springer