548,353 ALA-OPAS MARTTI Recurrence of urolithiasis : diagnostic and therapeutic aspects of calcium and cystine stones : academic dissertation/ by Martti Ala-Opas 4 Medical Faculty of the University of Helsinki. - Helsinki : [Yliopistopaino], 1990. - 82, [30 wiele liczb.] s. : il., wykr. ; 25 cm Summ. ISBN 952-90-1945-9