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ČSSR im Umbruch : Berichte, Kommentare, Dokumentation
Grünwald, Leopold, (1968)
Der rote Foltergarten : Verbotene Reportagen
Mňačko, Ladislav, (1964)
The Czechoslovak reform movement, 1968 : [proceedings of the Seminar held at the University of Reading on 12-17 July 1971]
Kusin, Vladimir V., (1973)