TY  - BOOK
AU  - Clark, John O E
AU  - 
TI  - Computers at work
U1  - 681.4 
PY  - 1970///
CY  - London
PB  - Hamlyn
KW  - Computer systems
KW  - Computer operating systems
KW  - Computer peripherals
KW  - Computer software
KW  - Computers
KW  - Electronic data procressing
ER  -