Jerry
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New and Improved Areas
Natural Philosophy
Sir Isaac Newton (1642-1727)
Chymistry
Chemistry
Elements (chemical)
Hydrogen (1 H)
Hydrocarbons
Tar
Attachments
Tar - Wikipedia
Parents
Hydrocarbons
Children
Coal Tar (byproduct)
Tar Paper
Tar-Bound Macadam
Tarmacadam (Tarmac!)
Wood Tar