TY  - BOOK
AU  - Davis, William S.
TI  - Information processing systems
SN  - 0201031833
AV  - QA76 .D33333 1981
U1  - 001.64 
PY  - 1981///
CY  - Reading, Mass.
PB  - Addison-Wesley
N1  - Includes bibliographical references and index
ER  -