TY  - BOOK
AU  - Khurana, K J S
AU  - Markanday ,R/
TI  - Maths 30 Days wonder
SN  - 9788121933599
U1  - 510.76  K527M 
PY  - 2013///
CY  - New Delhi
PB  - S.Chand pub
ER  -