No abstract available
MeSH terms
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Amber / chemistry*
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Amber / classification
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Diterpenes / analysis
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Ferns / chemistry
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Illinois
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Magnoliopsida / chemistry
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Magnoliopsida / metabolism
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Paleontology*
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Plants / chemistry*
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Plants / metabolism
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Stereoisomerism
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Terpenes / analysis
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Time
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Tracheophyta / chemistry
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Tracheophyta / metabolism
Substances
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Amber
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Diterpenes
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Terpenes