bn:00556750n
Noun Concept
Categories: Building materials, Cement
EN
Roman cement
EN
Roman cement is a substance developed by James Parker in the 1780s, being patented in 1796. Wikipedia
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EN
Roman cement is a substance developed by James Parker in the 1780s, being patented in 1796. Wikipedia
A natural cement made by burning septaria and mixing in sand. Wiktionary
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DISCOVERER OR INVENTOR
MATERIAL USED
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