Courseware on Answer Writing for UPSC Civil Services Main and State PSCs Main Exams 2025 by Manuj Jindal (IAS) | 2nd edition (latest)| In-depth Answer Guide to all UPSC Main GS Papers I - IV | Solved Previous Years� Question Papers (2017, 2018, 2021-2024) PYQs for GS papers 1 to 4 of Main exam & Moc