TY  - BOOK
AU  - Ajay Pratap Singh
AU  - Mayank Yuvraj
TI  - DDC 23: A practical approach
SN  - 9788170194941
U1  - 025.431 AJA/DEW 
PY  - 2014///
CY  - New Delhi
PB  - Today and tomarrow's printers and pub.
ER  -