Quantum redactiones paginae "Urea" differant
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Linea 7:
Anno [[1828]], uream artificiose creavit ex [[ammonia]] et [[acidum cyanicum|acido cyanico]] [[Fridericus Wöhler]] [[chemia|chemicus]] [[Germania|Germanus]].
[[Fasciculus:Urea Synthesis Woehler.png|thumb|[[cathion]] [[
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