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Huancayo (Spanish pronunciation: [waŋˈkaʝo]; in Wanka Quechua: Wankayuq [wɐŋˈkæjuː], '(place)...
Leiden (, Dutch: [ˈlɛi̯də(n)] (listen); in English and archaic Dutch also Leyden) is a city and...
Cobalt is a chemical element with the symbol Co and atomic number 27. Like nickel, cobalt is...