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Title: Glass encased sectional model of Comptometer by Felt & Tarra [Go to resource]
Description: Glass encased sectional model of Comptometer by Felt & Tarrant, Chicago, USA, controlled key duplex model J License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: model (calculating machine) Temporal: 1927-1928 Source: Science Museum Creator: Felt and Tarrant Manufacturing Company Identifier: 1928-309 Go to resource More Like this...
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