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Title: The "Small" Pocket Calculator, a circular slide rule patente [Go to resource]
Description: The "Small" Pocket Calculator, a circular slide rule patented 1918, made by G. Small, Boston, in leather pouch License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: circular slide rule Source: Science Museum Creator: Small, G. Identifier: 1989-540 Go to resource More Like this...
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