TY  - BOOK
AU  - Vickery,B.C.
TI  - Information systems
SN  - 040870456X
U1  - 025 VIC 
PY  - 1973///
CY  - London
PB  - Butterworths
KW  - Information storage and retrieval systems
N1  - Bibliography: p. 335-345
ER  -