RT Journal RT Statistics T1 Statistical yearbook = Statističeskij ežegodnik LA English LA Russian PP Budapest PB Off. YR 1958 UL https://krimdok.uni-tuebingen.de/Record/129317004 NO 1978 - 1981 ohne Parallelsacht NO Zusatz 1978 - 1981 english translation of the text K1 Zeitschrift K1 Statistik K1 Ungarn