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.
Reprinted from Encyclopedia of Microbiology, pp. vii-viii, Copyright 1992, with permission from Elsevier. and http://www.elsevier.com/wps/find/homepage.cws_home/
Monograph. Lederberg, Joshua. [Preface to the Encyclopedia of Microbiology]. Encyclopedia of Microbiology. [Academic Press], [1992]. Pp. vii-viii. Excerpt. Monograph. 2 Images.. Lederberg UI. P291