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Title: Ivory slide rule with two slides, by Dring and Fage, size 12 [Go to resource]
Description: Ivory slide rule with two slides, by Dring and Fage, size 12 7/8" x 2" License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: slide rule Source: Science Museum Creator: Dring and Fage Identifier: 1932-73 Go to resource More Like this...
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