TY  - BOOK
AU  - Balasubramanian P.
AU  - Beula,C. Catherin
TI  - Classification Theory
SN  - 9789392594243
U1  - 025.4 
PY  - 2023///
CY  - New Delhi
PB  - Ess Ess Publications
KW  - Library Classification
ER  -