Standard international trade clasiification, revised.
| Fformat: | Llyfr |
|---|---|
| Iaith: | English |
| Cyhoeddwyd: |
New York
United Nations
1961.
|
| Cyfres: | Its Statistical papers, ser.M, no.34
|
| Pynciau: |
| Fformat: | Llyfr |
|---|---|
| Iaith: | English |
| Cyhoeddwyd: |
New York
United Nations
1961.
|
| Cyfres: | Its Statistical papers, ser.M, no.34
|
| Pynciau: |