TY  - BOOK
AU  - WALSH, M.E
TI  - UNDERSTANDING COMPUTERS WHAT MANAGERS AND USERS NEED TO KHNOW
SN  - 0-471-08191-4
U1  - 004 WAL'U 
PY  - 1981///
CY  - NEWYORK
PB  - JOHN WILEY
ER  -