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.
Periodical. McCurdy, Patrick P., and Chemical and Engineering News. "The Fallen Hero." Chemical and Engineering News, (3 November 1969): 5. Article. 1 Image.. Chemical and Engineering News