Authors: Maltry, Werner --- Pötke, Ernst --- Schneider, Boto --- Baunack, H. --- Behling, H. --- et al. Buschbeck, E. --- Dolzmann, H. --- Hlawitschka, Ernst --- Kny, K. --- Nehring, Karl --- Ochmann, J. --- Simon, K.-H. --- Troitzsch, R.
Year: 1975 Publisher: Berlin Verlag Technik