TY  - BOOK
AU  - Heaps,H.S  .
TI  - Information retrieval : computational and theoretical aspects / 
T2  - Library and information science series, 
SN  - 0123357500
U1  - 029.7 
PY  - 1978///
CY  - New York : 
PB  - Academic Press , 
KW  - INFORMATION STORAGE AND RETRIEVAL SYSTEM
N1  - Includes indeX
ER  -