TY  - BOOK
AU  - Langenbach,Robert G
TI  - Introduction to automated data processing
PY  - 1968///
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
KW  - Business
KW  - Data processing
KW  - Punched card systems
N1  - Bibliography: p. 232
ER  -