TY  - GEN
AU  - Stair, Ralph M.
TI  - Principles of data processing : : concepts, applications, and cases / 
SN  - 0256029911
AV  - QA76  
PY  - 1984///
CY  - Homewood, Ill. : 
PB  -  R.D. Irwin, 
KW  - Electronic data processing
N1  - Includes bibliographical references and index
ER  -