1971 survey of dental practice. X. Some characteristics of dental practice according to level of gross receipts. Bureau of Economic Research and Statistics.
D000367:Age Factors; D000571:American Dental Association; D003365:Costs and Cost Analysis; D003815:Dentists; D004468:Economics, Dental; D006801:Humans; D007182:Income; D011364:Professional Practice; D014481:United States