The world coal-mining industry.
| Institutionell upphovsman: | |
|---|---|
| Materialtyp: | Bok |
| Språk: | English |
| Publicerad: |
Nendeln
Kraus Reprint
1975.
|
| Serie: | Studies and reports. Series B (Economic conditions)
nos. 31-32 |
| Ämnen: |