Dear aspirant,
there are there are some special books which help you to clear UPSC exam the names of the following books are as follow
1. Indian colleges for civil services exam bi a m Laxmikant( politics)
2. Indian art and culture by Nitin Singhania
3. Certificate physical and human by Goh long
4. Oxford School atlas
5. Indian economy by Rahul Singh
6. Drishti Publication( current affairs)
7. Brief history of modern India
8. India year book
9. NCERT books are goods for science but you can also prefer Samanya Vigyan by Sardar Singh
I hope it will have you
thank you
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