TY  - BOOK
AU  - Lancaster, Wilfrid  F.
TI  - Information retrieval systems: characteristics,testing and evalution
T2  - Information Sciences Series
SN  - 0471046736
PY  - 1979///
CY  - New York
PB  - Johnwiley&sons
KW  - Information science
KW  - Library science
N1  - Includes bibliography and indexes
ER  -