. . "No restrictions on use"@en . . "2011 May 26" . "This is a witness interview of the United States Holocaust Memorial Museum's Perpetrators, Collaborators, and Witnesses: The Jeff and Toby Herr Testimony Initiative, a multi-year project to record the testimonies of non-Jewish witnesses to the Holocaust. The interview was directed and supervised by Nathan Beyrak."@en . . . "2 videocassettes (DVCAM), sound, color ; 1/4 in."@en . "irn44904" . . . "Oral history interview with János Kopka"@en . . "United States Holocaust Memorial Museum"@en . "No restrictions on access"@en .