TY  - BOOK
AU  - Sehgal, R.L.
TI  - Number building in Dewey Decimal classification,  Universal Decimal classification and Colon  classification
SN  - 8170001536
U1  - 025.43 
PY  - 1993///
CY  - New Delhi
PB  - Esss Ess Publications
N1  - SR
ER  -