1648-1649 1648-1657 approximately1594-1657 biography cossack-polishwar cossacksinliterature ethnicrelations gezerottaḥve-tat hetmans history historyandcriticism inliteraturekhmelʹnyt͡sʹkyĭ jewishliterature jews khmelʹnyt͡sʹkyĭ literatureandthewar persecutions poland slavicliterature ukraine warsaw zaporozhiansinliterature