CALENDAR: Julian/Gregorian (to 15 Feb 1918); Gregorian (from 16 Feb 1918); MAIN RECORD: languages used: Ukrainian, Russian (to 1989); scripts: Ukrainian - original (in parentheses), Russian - original (in parentheses); TRANSLITERATION: Ukrainian -"The World's Writing Systems", ed. by Peter T. Daniels and William Bright (Oxford: Oxford University Press, 1996), Russian GOST-1983; OTHER: English equivalents