TY  - BOOK
AU  - Cleverdon,Cyril
AU  - Mills, Jack 
AU  - Keen, Michael 
TI  - Factors determining the performance of indexing systems : Vol. I Design 
T2  - ASLIB cranfield research project
PY  - 1968///
CY  - Cranfield
PB  - The college of Aeronautics
KW  - Performance indexing
KW  - Research papers
KW  - Test collection
N1  - Vol. 1 (Design), Part 2. (Appendices)
ER  -