Hits 1-2 within 2 documents
Hits 1-2 within 2 documents
Author(s): Bisky, Lothar; Förster, Peter; Hennig, Werner; Mühlhausen, Aribert; Pinther, Arnold; Siegel, Ulrike; Müller, Gerhard.- 1969. 186p.
Author(s): Bisky, Lothar; Friedrich, Walter.- 1972. 7p.