Sea-bed mining (1977-1979)

Ижил төстэй зүйлс

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