TY  - BOOK
AU  - Soni Badal ; Devi K Suganya 
TI  - Information Retrieval Models and Concepts 
SN  - 978-93-5424-679-1
U1  - 020 SON 
PY  - 2021///
CY  - New Delhi 
PB  - Wiley 
KW  - Information Retrieval
ER  -