Four-book set of reference books for civil servant promotion exam preparation. [Set Contents] ① Key Points of Local Public Service Law, 10th Revised Edition ② 200 Questions on Local Public Service Law, 4th Revised Edition ③ 250 Questions on Local Autonomy Law, 6th Revised Edition ④ Key Points of Local Autonomy Law, 11th Revised Edition No writing inside. ④ has stains on the back cover, dust jacket, and bottom of the book (Images 13-16). The contents are not affected.