TY  - BOOK
AU  - Orr,William D.
TI  - Conversational computers
AV  - QA 76.5 O75c 1968
U1  - 621.3819/58 
PY  - 1968///]
CY  - New York
PB  - John Wiley and Sons
KW  - Time-sharing computer systems
KW  - Online data processing
N1  - Bibliography: p. 88-89
ER  -