Title: Tosi pinmin kajok munje mit kajok kyehoek e kwanhan yŏnʾgu /
Authors: Yi Yi, Hyo-jae, 1924-; Yi, Tong-wŏn.
Publisher: Ihwa Yŏja Taehakkyo Mulli Taehak Pusŏl Yŏsŏng Chawŏn Kaebal Yŏnʾguso,
Year: 1972
Subjects: Birth control Korea.; Korea Social conditions.