TY  - BOOK
AU  - Ojha, N.N.
TI  - History  IAS mains Q & A
SN  - 9788194438625
U1  - 954 
PY  - 2010///
CY  - NOIDA
PB  - Chronicle Books 
N1  - Topic-wise solutions of previous years' papers  revised & updated edition-2020
ER  -