Baochi shinei qingjie
'Keep the classroom clean'. Print no. 5.28 54-10. Published early 1950s.
| Institution: | International Institute of Social History |
|---|---|
| Format: | IMAGE |
| Published: |
Ca. 1952
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/10622/EE052251-4C06-48EF-9CE7-7CE1424766BC |