Statistics on volume of medical and dental X-ray visits, by area of body X-rayed, place of X-ray visit, type of X-ray, age, sex, race, place of residence, geographic region, family income, and education. Based on data collected in household interviews during the period April-September 1970.DHEW publication no. (HSM) 73-1507.Statistics for 1964 published in Population exposure to X-rays, U.S., 1964, issued by the U.S. Public Health Service X-Ray Exposure Study
