TY  - BOOK
AU  - Gruenberger F J
AU  - McCracken D D
TI  - Introduction to electronic computers: problem solving with the IBM 1620
U1  - 651.26 
PY  - 1963///
CY  - London
PB  - Wiley
KW  - Electronic computer
KW  - IBM 1620
KW  - Office automation
ER  -