715,330 CONGRESS 21st. Congress of Thoracic Cardiac and Vascular Surgery : Section of the Polish Surgical Society /with international: participation]: Cracow , Poland , September 4-6 1986 : detailed final programme / [Antoni J.Dziatkowiak president of the Organising Committee ] Cracow : [ b.w.], 1986 [Druk.Narodowa Zakł. nr 3].- 89,[2,] s. / 21 cm