On practice :
| Institution: | International Institute of Social History |
|---|---|
| Format: | TEXT |
| Published: |
Foreign Languages Press,
1966.
Peking : |
| Subjects: | |
| Online Access: | http://hdl.handle.net/10622/041B68A2-CDE7-41E8-AD1E-ADA5256859D5 |
| Published: | 1966. |
|---|