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Title: Portable telephone line test equipment, 1916-1920 [Go to resource]
Description: Portable telephone line test equipment, 1916-1920 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: telephone line test equipment Temporal: 1916-1920 Source: Science Museum Identifier: 1999-224 Go to resource More Like this...
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