Charles Tomes Lecture, 1980. Professional purpose.
D003813:Dentistry / Q000639:trends*; D004468:Economics, Dental; D006291:Health Policy; D006295:Health Resources; D006301:Health Services Needs and Demand; D006665:History of Dentistry; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D013222:State Medicine / Q000191:economics; D006113:United Kingdom