(1968). Commemoration of the fiftieth anniversary of the declaration of independence of the Republic of Czechoslovakia, October 18, 19 and 20, 1968 at the Statler-Hilton Hotel, Washington, D.C. under the sponsorship of the Czechoslovak National Council of America. [S.l.: s.n..

Commemoration of the Fiftieth Anniversary of the Declaration of Independence of the Republic of Czechoslovakia, October 18, 19 and 20, 1968 At the Statler-Hilton Hotel, Washington, D.C. Under the Sponsorship of the Czechoslovak National Council of America. [S.l.: s.n., 1968.

Commemoration of the Fiftieth Anniversary of the Declaration of Independence of the Republic of Czechoslovakia, October 18, 19 and 20, 1968 At the Statler-Hilton Hotel, Washington, D.C. Under the Sponsorship of the Czechoslovak National Council of America. [S.l.: s.n., 1968.