TY  - BOOK
AU  - Langenbach,Robert G.
TI  - ADP Introduction to automated data processing
U1  - 651.26 
PY  - 1968///
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
KW  - Business
KW  - Data processing
KW  - Punched card systems
N1  - Includes index
ER  -