Official websites use .gov A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Circular of information to physicians regarding the measures adopted by the Board of Health for the prevention of tuberculosis in the City of New York
Circular of information to physicians regarding the measures adopted by the Board of Health for the prevention of tuberculosis in the City of New York