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Title: General Foods Profit Calculator, cardboard slide rule copyri [Go to resource]
Description: General Foods Profit Calculator, cardboard slide rule copyright 1940 by Walter T. Scott, Philadelphia License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: slide rule Temporal: 1940-1941 Source: Science Museum Creator: Scott, Walter T. Identifier: 1990-699 Go to resource More Like this...
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