EBSEES: 4 hits for Łętowski, Janusz

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 Łętowski, Janusz provides 4 hits
1	Polish public administration between crisis and renewal Letowski, Janusz, in: Public Administration, 71, Spring-Summer, 1993, p. 1-12. (Special issue on Administrative transformation in Central and Eastern Europe)
2	Prawo administracyjne. Zagadnienia podstawowe Łętowski, Janusz, Warszawa, PWN, 1990, 375 p
3	Przyjemności i rozrywki (Plaisirs et divertissements) Łętowski, Janusz, Warszawa, Twój Styl, 1993, 176 p
4	Autorité et contrat dans l'administration moderne en Pologne Letowski, Janusz, in: Annuaire européen d'Administration publique, 20, 1997, p. 145-64

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

Polish public administration between crisis and renewal

Prawo administracyjne. Zagadnienia podstawowe

Przyjemności i rozrywki (Plaisirs et divertissements)

Autorité et contrat dans l'administration moderne en Pologne