Lignende værker

• Description of the fossil manganese nodules found in the shales of the DeGrey member as part of the Upper Missouri river terrace deposits
  af: Cox, Leslie Jane, et al.
  Udgivet: (1980)
• Analyses of manganese deposits in the Riding Mountain area
  af: Spector, Israel Henry
  Udgivet: (1941)
• Average composition manganese concretions in the Oacoma manganese deposit in South Dakota
  af: Cox, Leslie Jane, et al.
  Udgivet: (1980)
• Description of the fossil manganese nodules found in the shales of the Odanah and Riding Mountain Cretaceous escarpment of Manitoba
  af: Spector, Israel Henry
  Udgivet: (1941)
• (Table, page 95) Chemistry of bog manganese concretions and wad from the Columbia County, New York
  af: Spector, Israel Henry
  Udgivet: (1941)