Diamond Direction in German South West Africa: Vol. 7

• BArch, R 1001/1364
• Dossier
• Okt. 1911 - März 1912

Fait partie de Federal Archives (Archivtektonik)

Enthält u.a.: De Beers Consolidated Mines, Limited. Twentythird annual report for the year ending 30th June, 1911.

In: Mining and soil research >> Diamond direction in German Southwest Africa