On the duties of educational workers in the upbringing of the children and youth :
| Institution: | International Institute of Social History |
|---|---|
| Format: | TEXT |
| Published: |
Foreign Languages Publ. House,
1970.
Pyongyang : |
| Subjects: | |
| Online Access: | http://hdl.handle.net/10622/E6C8903E-C5F0-4C82-BE3C-4ABDAB226342 |