TY  - BOOK
AU  - Ranganathan,S.R.
TI  - Element of library calssification 
SN  - 8185273308
U1  - 025.4 
PY  - 1991///
CY  - New Delhi
PB  - UPS Publishers
KW  - Classification -History-Books
N1  - HB; Include index
ER  -