正易硏究
By: Yi Chŏng-ho
Publisher: Kukje Taehak Inmun Sahoe Kwahak Yŏnʼguso
Published: 1976
Place of publication: Sŏul
Language: kor
Number of pages: 336
Subjects: Divination
Other titles: Chŏngyŏk yŏnʼgu
Notes: "Purok, Chŏngyŏk" (photoreprint): p. 1-74 (2d group)

Includes bibliographical references.