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Title: Siemens-Ferreira miniature electromechanical frame [Go to resource]
Description: Signal lever frame, Siemens-Ferreira miniature electromechanical frame, 11 lever, for demonstration purposes. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: signal lever frame Source: Science Museum Creator: Siemens - Ferreira Identifier: 2003-9045 Go to resource More Like this...
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