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radiotelegraph
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gravimeter
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transmitter
man with a computer
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radiotelegraph
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switchboard
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electropneumatic
old calculating machine
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linotype
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gravimeter
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lathing
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the production of the beer
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bannack assay office
assay office in bannack
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examination room
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radiotelegraph
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galvanometer
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engelmayer
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reich cash register
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projectionists
microfilming
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linotype
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sewing room
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women in technology
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stenographers
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assay office in bannack
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teletypes
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photolithography
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montalcini
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laboratorio
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typesetters
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