1. Radiation protection guidance to federal agencies for diagnostic x-rays;Costle;Fed Reg,1978
2. Frost revisited: The modern epidemiology of tuberculosis;Comstock;Am J Epidemiol,1975
3. American Thoracic Society: Diagnostic standards and classification of tuberculosis and other mycobacterial diseases,1974
4. American Thoracic Society: The tuberculin test,1974
5. Tuberculin negative? (Editorial);Edwards;N Engl J Med,1972