TY  - BOOK
AU  - Gagan Pratap Sir
AU  - Gagan Pratap Sir
TI  - Maths concept king: Maths concept king
SN  - 9788198705594
SN  - 978819870
U1  - 1004 
PY  - 2025///
CY  - Dr. Mukhar Ji Nagar Delhi 110009
PB  - CHAMPION PUBLICATION
ER  -