Sea-bed mining (1977-1979)

Geahča maid

• Sea-bed mining of manganese nodules, II : 1977-1979
  Dahkki: British Ship Research Association
• Analysis of exploration and mining technology for maganese nodules
  Almmustuhtton: (1984)
• Ocean mining
  Dahkki: British Ship Research Association
  Almmustuhtton: ([197)
• Cashing in on the ocean [kasetvideo]
  Almmustuhtton: (1978)
• Manganese nodules : dimensions and perspectives
  Dahkki: 5240 United Nations Ocean Economics and Technology Office