character: Lothar Meyer
topic: Periodic Relationships
grade: 8
subject: History
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character: Dmitri Mendeleev
topic: Periodic Table Development
grade: 8
subject: History
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character: John Newlands
topic: Law of Octaves
grade: 8
subject: History
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character: Julius Lothar Meyer
topic: Chemical Periodicity
grade: 8
subject: History
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