733,627 VENA JOHN CHALLENGES Challenges to epidemiology in changing Europe : proceedings of the conference Krakow, July 2-3, 1999 / eds. Wiesław Jędrychowski, John Vena, Umberto Maugeri ; org. by Polish Society for Environmental Epidemiology in the co-operation with Polish Academy of Science, WHO European Center for Environmeent - and Health, Jagiellonian Univers / Collegium Medicum. Kraków : JU CM, 1999. - 248 s. ; 24 cm