UPSC STUDY MATERIAL

1. Ancient history by ram sharan Sharma

2. Medieval history by satish Chandra

3. Modern history by Bipan Chandra

4. Arts and culture by Nitin Singhania

5. Byju’s World history

6. Byju’s Geography

7. Polity by Laxmikanth

8. Byju’s Governance ,society and social justice 

9. Byju’s International relations and international organization

10. Byju’s Economy

11. Byju’s Science and technology 

12. Environment by Erach Bharucha 

13. Byju’s Internal security and disaster management 

14. Ethics by Subba rao

15. CSAT -TMH

16. Atlas – orient black swan

17. IAS solved question paper ( prelims) – vishal publications