A summary of the Washington, D. C. metropolitan area survey of color television receivers.
D003116:Color; D004219:District of Columbia; D006283:Health Physics / Q000295:instrumentation; D009316:National Institutes of Health (U.S.); D011827:Radiation; D011835:Radiation Protection; D011874:Radiometry / Q000295:instrumentation; D013690:Television; D014481:United States; D014492:United States Public Health Service