Partnership for progress international technical co-operation
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Philadelphia
American Academy of Political and Social Science
c1959.
|
| Cyfres: | Annals of the American Academy of Political and Social Science
v. 323 |
| Pynciau: |