TY - BOOK AU - GKP TI - 21 year's (1997-2017) solved papers general studies : Paper - I: for civil services preliminary examination 2018 SN - 9789386860538 U1 - 351.076001 PY - 2018/// CY - New Delhi PB - G.K Publication KW - KW - General studies KW - civil services preliminary ER -