Kardelj-Sperans revised and accomplished his study on the Slovene national question (1939) before the second edition in Slovene (1957) to a great extend. He took into account prof. Grafenauer's remarks at the third Slovene edition (1970), the fourth edition (1973) has been only a reprint of the third one Kardelj's »Development of the Slovene National Ouestion« has been translation into Serbo-Croatian (1958, 1960, 1973), into Macedonian (1959) and into Hungarian language (1961). Translation into German language appeared in 1971 (Die Vierteilung. Nationale Frage der Slowenen, 1971). Comparison among different translations has still not been carried out, although a majority of them had been prepared on the basis of the second edition.