TY  - BOOK
AU  - Leon, A.
TI  - Introduction to computers
SN  - 971-23-3886-x
U1  - GC 004 L579 2004 
PY  - 2004///
CY  - Manila, Philippines
PB  - Rex Book Store
KW  - Computers
N1  - Includes bibliographical references and index
ER  -