Nieznani przyjaciele
Subtitle: opowiadania z niemieckiego ruchu oporu 1933-1935
By: [Przekład autoryzowany Krzysztofa Radziwiłła
Publisher: Państwowy instytut wydawniczy
Published: 1950
Place of publication: Warszawa]
Language: pol
Translated from: eng
Number of pages: 174
Notes: Originally published in an English translation in 1940 under the title "Germany beneath the surface". This translation is based on the German ed., published under the title "Und ringsum schweigen". ct Verso of t.p. and p. [6]