TY  - BOOK
AU  - Hanson,Peggy L
TI  - Keypunching
SN  - 0135149010
PY  - 1984///
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
KW  - Punched card systems
KW  - Keypunches
N1  - Includes index
ER  -