EBSEES: 2 hits for Polish Literature / 18th Century

The European Bibliography of Slavic and East European Studies (EBSEES) collects books, journal articles, reviews and dissertations from Eastern Europe (former countries of Eastern Bloc) which were published in Belgium, Germany, Finland, France, Great Britain, the Netherlands, Austria and Switzerland from 1991 to 2007. The segment "Literature" and "Culture" of the European Bibliography of Slavic and East European Studies contains 18.000 bibliographic entries (from the total asset of 85.000). More information can be found here.

Your search for Polish Literature / 18th Century provides 2 hits
1	Women and the literary field of the Stanislavian Age. (Wegierski's epigrams about the five Elsbietas) Van der Meer, Jan, in: Welt der Slaven 46, 2001, pp. 201-224
2	Sturm und Zephyr: zur Poetik der Kontraste und Paradoxe in der Komposition der 'Oden oder Lyrica in vier Büchern' (1787) von Franciszek Dionizy Kniaźnin Fieguth, Rolf, in: Zentrum und Peripherie in den slavischen und baltischen Sprachen und Literaturen, Robert Hodel (Hg.), 2004, pp. 9-32

The European Bibliography of Slavic and East European Studies (EBSEES) - 1991-2007

Women and the literary field of the Stanislavian Age. (Wegierski's epigrams about the five Elsbietas)

Sturm und Zephyr: zur Poetik der Kontraste und Paradoxe in der Komposition der 'Oden oder Lyrica in vier Büchern' (1787) von Franciszek Dionizy Kniaźnin