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    • ARSENIC AND ARSENIC COMPOUNDS (EHC 224, 2001)

      1. SUMMARY 1.1 Properties and analytical procedures. Arsenic is a metalloid widely distributed in the earths crust and present at an average concentration of 2 mg/kg.

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    • Violence, selection and infant mortality in Congo

      We turn to the United Nations Conference on Trade and Development (UNCTAD) dataset to get the monthly price series of 12 minerals (aluminum, copper, gold, iron, lead, manganese, nickel, oil, phosphate, tin, wolframite, and zinc) and compile information from The Economics of Tantalum (Roskill Information Services, 2009), Metal Pages, and the US Geological Survey to build our price series for

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    • Ideadiez

      is and in to a was not you i of it the be he his but for are this that by on at they with which she or from had we will have an what been one if would who has her

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    • Gold

      Gold is a chemical element with symbol Au (from Latin aurum) and atomic number 79, making it one of the higher atomic number elements that occur naturally. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal.Chemically, gold is a transition metal and a group 11 element.It is one of the least reactive chemical elements and is solid under

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