Computer Control and Security : A Guide for Managers and Systems Analysts /

Autor Perry, William E., 1931-
Vydáno 1981

Effective methods for software testing /

Autor Perry, William E., 1931-
Vydáno 1995

So You Think You Need Your Own Business Computer : The Manager's Guide to Selecting, Installing, and Using the Right Small Computer System /

Autor Perry, William E., 1931-
Vydáno 1982