Byjus upsc standard books

These are list of books which byjus provided :- RS sharama - ancient history Satish Chandra - medieval history Bipin Chandra - modern history World history & post independence - byjus book Art & culture - nitin singhania Geography - byjus book Governance & society & social justice - byjus book M laxmikant - Indian polity International relations - prof pushpesh pant Science & technology - byjus book Nitin singhania - Indian economy Internal security - Ashok Kumar & vipul anekant Disaster management- byjus book Environment & ecology - r rajagopalan Ethics - g subha rao Csat- madhukar Kumar bhagat Orient Black swan - atlas Mains solved paper - byjus Prelims solved paper - byjus