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Cobalt is a chemical element with the symbol Co and atomic number 27. Like nickel, cobalt is...
West Oxfordshire is a local government district in northwest Oxfordshire, England, including...
Johannesburg ( joh-HAN-iss-burg, also US: -HAHN-; Afrikaans: [juəˈɦanəsbœrχ]; Zulu and Xhosa:...