Uldall, A.Petri, C.Geill, T.2017-06-172017-06-172010-07-011976-01-011437-4331http://edoc.hu-berlin.de/18452/10353undThe Composition of Gallstones from Geriatrie Patients. Methods for the Determination of Cholesterol and of Black Substances in Gallstonesarticleurn:nbn:de:kobv:11-10011586710.18452/9701