TY  - BOOK
AU  - Mathies,M.Lorraine
AU  - Watson,Peter G.,jtauth
TI  - Computer-based reference service
U1  - 029.5/M431c 
PY  - 1973///
CY  - Chicago
PB  - American Library Association
KW  - Information storage & retrieval systems
KW  - Libraries-Automation
N1  - Bibliogr. & Index: p. 188 - 200
ER  -