QUANTIFICATION 546,107 Quantification of valvular regurgitations-appraisal of new techniques : Meeting of the European Society of Cardiology Working Group on Valvular prostheses 11-12 October 1985, Namur, Belgium / ed. by R. Kremer, H. P. Krayenbuehl and H. E. Kulbertus. - London [etc.] : Academic Press, 1987. - X, 84 s. : il., wykr. ; 25 cm (European Heart Journal, ISSN 0195-668X ; vol. 8, suppl. C)