TY  - BOOK
AU  - Blum, J
AU  - Blum, Estherl
TI  - Keypunch, keytape and keydisc
PY  - 1975///
CY  - New York: 
PB  - Gordon and Breach, 
KW  - Information technology
KW  - Microprocessor
KW  - Microcomputer
ER  -