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.
Manual of recommended practice for sanitary control of the shellfish industry: recommended by the United States Public Health Service, 1946
Manual of recommended practice for sanitary control of the shellfish industry: recommended by the United States Public Health Service, 1946