Hits 1-3 within 3 documents
Hits 1-3 within 3 documents
Author(s): Mühlhausen, Aribert; Thyrolf, Monika; Pfeiffer, U.; Wiedemann, Dieter; Schmidt, G.; Kaftan, Burkhard; Schulze, H.; Bonus, Hans; Neise, Ulrich; Hoffmann, J.; Sieber, W..- 1971. 53p.
Author(s): Wiedemann, Dieter; Geier, Wolfgang.- 1975. 23p.