GKP _ 21 year's (1997-2017) solved papers general studies : Paper - I for civil services preliminary examination 2018 - New Delhi G.K Publication 2018 - 452 p . in various paging. PB 24 cm. ISBN: 9789386860538 Subjects--Personal Names: _ Subjects--Uniform Titles: General studiescivil services preliminary Dewey Class. No.: 351.076001 / GEN