TY  - BOOK
AU  - Kochen, Manfred
TI  - Principles of information retrieval
T2  - A Wiley-Becker & Hayes Series Book
SN  - 0-471-49697-9
PY  - 1974///
CY  - California: 
PB  - Melville Publishing Company, 
KW  - Information retrieval
KW  - Citation nets
KW  - Classification
KW  - Problem-solving
ER  -