TY  - BOOK
AU  - Lancaster, F Wilfrid
TI  - Information retrieval systems: characteristics, testing and evaluation
SN  - 471-51240-0
U1  - 029.7 21st
PY  - 1968///
CY  - New York
PB  - John Wiley
KW  - Information storage and retrieval systems; Electronic information systems; Information retrieval
ER  -