Yearbook of international congress proceedings. 1st- ed.; 1960
| Awdur Corfforaethol: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | Saesneg |
| Cyhoeddwyd: |
Brussels
Union of International Associations
n.d.
|
| Cyfres: | Union of International Associations. Publications
|
| Pynciau: |