TY  - BOOK
AU  - Gray,N.A.B.
TI  - Introduction to computer systems
SN  - 0134803868 :
AV  - QA76 .G675 1987
U1  - 004�19 
PY  - 1987///
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
KW  - Computers
ER  -