X-ray fluorescent scanning of the thyroid by M. H. Jonckheer, F. Deconinck - 1983 - 184 pages
Xylitol and oxalate by Albert Bär, Günther Ritzel - 1985 - 152 pages
Xylitol and oxalate by Albert Bär, Günther Ritzel - 1985 - 152 pages