Kang, K. W. (1973). A study on the interrelationships between lactation and postpartum amenorrhea. Korean Institute for Family Planning.
Chicago-referens (17:e uppl.)Kang, Kil Won. A Study on the Interrelationships Between Lactation and Postpartum Amenorrhea. Seoul: Korean Institute for Family Planning, 1973.
MLA-referens (9:e uppl.)Kang, Kil Won. A Study on the Interrelationships Between Lactation and Postpartum Amenorrhea. Korean Institute for Family Planning, 1973.
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