Information sources on the iron and steel industry
| Awdur Corfforaethol: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
New York
United Nations
1977.
|
| Cyfres: | UNIDO guides to information sources
no.26 |
| Pynciau: |