By Enger E..
New York Harper and Row, Publishers, Inc 1980 .
143 p. 9780653630430

Place hold on Language basics: level F

By Sohn, David A..
Lincolnwood, Ill., USA : National Textbook Co., 1990 .
291 p. : , Includes index. 28 cm..
0844253464

Place hold on Writing by doing :

By Enger.

Place hold on Computer security.

By Enger, Norman L. and Paul W. Howerton..
New York AMACOM 1980 .
264 0-8144-5582-4

Place hold on Computer Security: A Management Audit Approach