Which are the best books for PSIR for ias mains exams? Tagged: study material for ias exams This topic has 0 replies, 1 voice, and was last updated 4 years, 8 months ago by jyati khanna. Viewing 1 post (of 1 total) Author Posts January 27, 2020 at 7:48 pm #2248 jyati khannaParticipant best books for PSIR for ias mains exams Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In