Dee ihe na-aga n'ihu maka paragraf a - E mere ihe nkiri ahụ na Czechoslovakia na January 1970. Ihe ruru nde mmadụ 1.5 kiriri ya tupu e wepụ ya n'ụlọ ihe nkiri. E gosipụtaghị ya ọzọ ruo n'afọ 1989. Nke a bụ akụkụ nke usoro a na-emekarị mgbe mwakpo nke Warsaw Pact gasịrị
, na ihe nkiri Czechoslovak a machibidoro iwu na 1970 karịa na afọ 20 gara aga. Ka oge na-aga, ihe nkiri ahụ nwere ihe ịga nke ọma na DVD.