Analysis of information sources in references of the Wikipedia article "Iron" in English language version.
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earliest blast furnace discovered in China from about the first century AD
{{cite book}}: ISBN / Date incompatibility (help)the blade's composition of iron, nickel and cobalt was an approximate match for a meteorite that landed in northern Egypt. The result 'strongly suggests an extraterrestrial origin'
the blade's composition of iron, nickel and cobalt was an approximate match for a meteorite that landed in northern Egypt. The result 'strongly suggests an extraterrestrial origin'
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