Hrihorij J. Ukrainian periodicals as an object of source- -study of Ukrainian culture (1917-1920)

In the Thesis Ukrainian periodicals are for the first time viewed as a mass historical source of research of Ukrainian culture at the time of Ukrainian revolution 1917-1920.Methodological and methodical aspects of research are defined and on their base search, systematization, processing and bibliographical account of periodicals is made. The notion " Ukrainian press " is clarified.The general tendencies of forming and functioning of Ukrainian periodicals at the time of Central Council, Hetmanate, Directory, UPR (Ukrainian Peoples Republic), USSR (Ukrainian Socialist Soviet Republic) were traced. The periodicals were systematized and classified; the subjects and content of released editions were revealed including those from specialized vaults that were inaccessible for researchers.As a result of the research of varied and miscellaneous Ukrainian periodicals, a massif of new historical facts about the the most important events and phenomena in all fields of sacred life in hard times for Ukrainian society were derived.