00570nam a22001817a 4500 181980 181980 20211013112950.0 EN230921 375.00 9788194438625 Pansy Books 954 History IAS mains Q & A / edited N.N. Ojha NOIDA Chronicle Books 2010 NOIDA A-26, Sector 2, 201301 344p. 24cm(pbk) Topic-wise solutions of previous years' papers revised & updated edition-2020 Ojha, N.N. 804 ddc EN HIS 954