*B. H. Kim, “On the Kyungrak system,” Journal of the Academy of Medical ScienceS of the Democratic People's Republic of Korea, vol. 90, S. 1–41, 1963 | *B. H. Kim, “On the Kyungrak system,” Journal of the Academy of Medical ScienceS of the Democratic People's Republic of Korea, vol. 90, S. 1–41, 1963 |