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Title: Polygraph, model 5D, by Grass Instrument Co., American, 1960 [Go to resource]
Description: Polygraph, model 5D, by Grass Instrument Co., American, 1960-1970 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: polygraphs Temporal: 1960-1970 Source: Science Museum Creator: Grass (maker) Identifier: 1988-199 Go to resource More Like this...
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