Observations on bituminous substances, with a description of the varieties of the elastic bitumen ... Read in the Linnaean Soc / by Charles Hatchett.

Specification of Andrew Kurtz : artificial fuel.

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Bituminous materials

Works from the collections

Observations on bituminous substances, with a description of the varieties of the elastic bitumen ... Read in the Linnaean Soc / by Charles Hatchett.

Specification of Andrew Kurtz : artificial fuel.