XXVI Congreso del Partido Comunista de la Unión Soviética (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "XXVI Congreso del Partido Comunista de la Unión Soviética" in Spanish language version.

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archive.org

Robert Vincent Daniels (1985). A Documentary History of Communism. I.B.Tauris. p. 442. ISBN 1-85043-035-7.