PRACE DOKTORSKIE - FINLANDIA 290,659 VIHMA YRJO Pelviureteric obstruction in children : results of pyeloplasty as evaluated with x-rays, planimetry and isotopes : academic dissertation / Yrjo Vihma ; from the Children s Hospital, University of Helsinki. - Helsinki : University, 1987. - 27 s. ; 28 cm ISBN 951-99863-4-0