Security procedures for computer systems
By: [by] Charles F. Hemphill, Jr. [and] John M. Hemphill.
Contributors: Hemphill, John M. 1946- joint author.
Publisher: Dow Jones-Irwin
Published: 1973
Place of publication: Homewood, Ill
Language: eng
Number of pages: 251
Subjects: Electronic data processing departments -- Security measures
Notes: Bibliography: p. 218-226.