Medical certification and monitoring of personnel requiring operator licenses for nuclear power plants. - La Grange Park, Ill. : ANS, 1996. - iii, 8 p. Approved February 7, 1996 by the American National Standards Institute, Inc. BibliografĂa y apĂ©ndice: p. 6-8 Standard No.: ANSI-ANS-3.4-1996