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Title: Components from a "Columbian" reinforced concrete floor, 190 [Go to resource]
Description: Components from a "Columbian" reinforced concrete floor, 1903 - two lengths of reinforcing bar (Bonna Type) with two support stirrups and two half cores of clinker concrete, one with the impression of a bar. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1990-166 Go to resource More Like this...
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