1. Volume 45, Issue 6, Pages 596-605 (June 1964)
Tuberculin Skin Testing in Secondary Schools in Baltimore County, Maryland 
SAMUEL P. SCALIA, M.D. 
Diseases of the Chest 
Volume 45, Issue 6, Pages (June 1964)
DOI: /chest
Copyright © 1964 The American College of Chest Physicians Terms and Conditions

2. FIGURE 1
Baltimore County with the five school districts, the election districts and the high schools in each district.
Diseases of the Chest  , DOI: ( /chest )
Copyright © 1964 The American College of Chest Physicians Terms and Conditions

3. FIGURE 2
Graphic comparison of percentage of students tested to percentage of reactors.
Diseases of the Chest  , DOI: ( /chest )
Copyright © 1964 The American College of Chest Physicians Terms and Conditions