STEAD, G Sixty years of radiology; physics. [electronic resource] - The British journal of radiology May 1956 - 234-8 p. digital Publication Type: Journal Article ISSN: 0007-1285 Standard No.: 10.1259/0007-1285-29-341-234 doi Subjects--Topical Terms: HumansPhysical PhenomenaPhysicsRadiology