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Group: Schaffhausen, Swiss canton of
People: Muhammad bin Tughluq
Topic: Western Architecture: 1840 to 1852
Location: Gorgan Golestan Iran

Per Teodor Cleve concludes in 1882 that …

Years: 1882 - 1882

Per Teodor Cleve concludes in 1882 that Mosander's didymia (from which are eventually isolated praseodymium and neodymium) is a complex earth, i.e., a mixture of several rare-earth oxides.

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North Europe (1882 - 1882)
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Northeast Europe (1882 - 1882)