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Nineteenth Century Scientific Instruments, Gerard L'E. Turner |
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The Time-keepers of Leiden Observatory, R H Gent & J H Leopold |
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The Atlantic Cable |
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Wireless at Sea |
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The Slide Rule |
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Television up to date |
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Television Science Museum |
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Stanley Catalogue |
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Old Medical and Dental Instruments |
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Electric Telegraph, A Social and Economic History |
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Early Electrical Communication |
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Book of Practical Television |
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