Vision care retrospective: the upbringing of a billion dollar stepchild.
Disser
P J
PJ
Spectrum Vision Systems, Inc., Kansas City.
D003363:Cost Control; D004465:Economic Competition; D005139:Eyeglasses; D006264:Health Benefit Plans, Employee / Q000266:history / Q000458:organization & administration; D049673:History, 20th Century; D006801:Humans; D009885:Ophthalmology / Q000191:economics*; D009907:Optometry / Q000191:economics* / Q000266:history; D014481:United States