301,096 SYMPOSIUM II Symposium of 3M Diagnostic Systems/Whittaker Bioproducts Rydzyna, 11-13 May 1991. - Warsaw : Publ. Ariel, 1992. - 86 s. : 11., wykr. ; 24 cm (Pneumontologia i Alergologia Polska, ISSN 0376-4761 ; t. 60, suppl. 1)