TY  - BOOK
AU  - Stair,Ralph M.
TI  - Principles of data processing: concepts, applications, and cases 
SN  - 0256024847
PY  - 1981///
CY  - Homewood, Ill.
PB  - R.D. Irwin
KW  - Electronic data processing
N1  - Includes bibliographical references and index
ER  -