Nibandh Nikunj For BPSC Civil Services Mains Exam By (Dr. Manish Rannjan) + UPSC Sookti Kosh: Key To Success In IAS Mains And Interview By (Piyush Rohankar, Danics)- Books In Hindi(Paperback, Dr. Manish Rannjan + Piyush Rohankar, Danics)