edited with introduction and explanctions by Choi Sun U,Chung Yang. edited with an introduction and notes by Neil Rhodes. edited with introduction and notes by Clara M. Knight. edited with introduction and explanctions by Choi Sun U,Chung Yang and Kim Won-Yong. edited with introduction and explanctions by Choi Sun U,Chung Yang and Chin Hong Sup. edited with an introduction and notes by Abe Capek. edited with introduction and notes by David T. Pottinger. edited with introduction and explanctions by Kim Choung Ki, Hwang Su Yong and Chung Young Ho. edited with an introduction and notes by John Barnard. edited, with an introduction and notes by K. Kumano.