Great discovery in biology and medicine. Substance of Kyungrak. [With contrib. of Kim Il Sung]
| Institution: | International Institute of Social History |
|---|---|
| Format: | TEXT |
| Published: |
Foreign Languages Publishing House,
1962.
Pyongyang : |
| Subjects: | |
| Online Access: | http://hdl.handle.net/10622/2FD5F6EE-821F-428D-9BD8-AF7FFA3656F2 |