Eitemau Tebyg

• (Table 1, page 152) Description of manganese nodules collected in the Pacific Ocean
  gan: Okada, Akihiko, et al.
  Cyhoeddwyd: (1970)
• (Table 2, page 152) Chemical composition of manganese nodules collected in the Pacific Ocean
  gan: Okada, Akihiko, et al.
  Cyhoeddwyd: (1970)
• (Table 1, page 168) Iron, manganese, and phosphorus concentrations in Fe-Mn-concretions from the Gulf of Bothnia, northern Baltic Sea
  gan: Winterhalter, Boris, et al.
  Cyhoeddwyd: (1967)
• Chemical composition in Pb and Zn of manganese deposits from the Pacific Ocean
  gan: Okada, Akihiko, et al.
  Cyhoeddwyd: (2023)
• Annotated record of the detailed examination of ferromanganese concretions from the Baltic Sea
  gan: Winterhalter, Boris
  Cyhoeddwyd: (1966)