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Wikipedia: Concrete
Wikipedia provides an encyclopedia entry about concrete that features pictures, diagrams, history and other information, as well as links to related topics.
Curated OER
Smithsonian Libraries: Scientific Identity: John Smeaton (1724 1792)
A portrait of John Smeaton from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.
Curated OER
Smithsonian Libraries: Scientific Identity: John Smeaton (1724 1792)
A portrait of John Smeaton from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.