PRACE DOKTORSKIE - FINLANDIA 548,357 PERASALO RITVA Glaucoma in institutionalized feriatric patients : academic dissertation / by Ritva Perasalo ; Medical Faculty of the University of Helsinki. - Helsinki : [Yliopistopaino], 1990. - 97 s. : wykr. ; 25 cm Summ. ISBN 952-90-1716-2