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Title: Circular logarithmic slide rule by K. Emil Troger, laminated [Go to resource]
Description: Circular logarithmic slide rule by K. Emil Troger, laminated paper with printed scales on card backing License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: circular slide rule Source: Science Museum Creator: Troger, K. Emil Identifier: 1990-458 Go to resource More Like this...
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