TY  - BOOK
AU  - Leon, Alexis 
AU  - Leon, Mathews
TI  - Introduction to computers
SN  - 971-23-3886-X
U1  - Fil 004 L551 1999 
PY  - 1999///
CY  - Manila
PB  - Rex Book Store, Inc.
KW  - Computers.
N1  - Includes appendices.
ER  -