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by Výborný, Rudolf, 1928-
Published 1966
by Jarník, Vojtěch, 1897-1970
Published 1963
by Jarník, Vojtěch, 1897-1970
Published 1974
by Jarník, Vojtěch, 1897-1970
Published 1976
by Borůvka, Otakar, 1899-1995
Published 1964
by Seber, G. A. F. 1938-
Published 1980