TY  - GEN
AU  - Blum,J.,Blum,E.
TI  - Keypunch, keytape and keydisc: a complete and concise manual for data processing students
PY  - 1975///
CY  - New York
PB  - Gordon and Breach
KW  - Data Processing
KW  - Manual
KW  - Keypunch
KW  - Keytape
KW  - Keydisc
ER  -