Small-scale mining a review of the issues.
| 1. Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
Washington
World Bank
c1987.
|
| Schriftenreihe: | World Bank technical paper
75 Industry and finance series 23 |
| Schlagworte: |