00687nam a22001937a 4500 192963 192963 20221012111654.0 B-745945 9789352667710 250.00 B-745945 Prabhat Paperbacks 000 Udaybhan Singh Objective Economic & Social Development: paper-1 general studies for civil services preliminary examination/ Udaybhan Singh New Delhi Prabhat Paperbacks 2018 4/19 Asaf Ali Road, New Delhi 110092 293p. 24cm (pbk) ddc EN UDA 000