727.223 727.224 CENTRAL 4th Central European Lung Cancer Conference: Gdańsk, Poland 26-29 September 1996 : programme and abstracts / [sci. Comm, and International Advisory Board S. Ahmedzai [et al.] ; org. by International Association for the Study of Lung Cancer [...]. -Gdańsk? : s.n. ], 1996. - 50, 160, XV s. : wykr. ; 21 cm