Origin
pyro- + bitumen
pyrobitumen
English Wiktionary. Available under CC-BY-SA license.
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MLA Style
"pyrobitumen." YourDictionary, n.d. Web. 16 January 2019. <https://www.yourdictionary.com/pyrobitumen>.
APA Style
pyrobitumen. (n.d.). Retrieved January 16th, 2019, from https://www.yourdictionary.com/pyrobitumen
