A follow-up tuberculin survey in the Rhondda Fach.
D001699:Biometry; D003625:Data Collection; D005500:Follow-Up Studies; D006801:Humans; D055633:Immune System Phenomena; D014373:Tuberculin; D014374:Tuberculin Test / Q000706:statistics & numerical data*
D014373:Tuberculin
TUBERCULIN REACTION/statistics