Grace's Guide To British Industrial History

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Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 168,045 pages of information and 247,219 images on early companies, their products and the people who designed and built them.

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,919 pages of information and 233,587 images on early companies, their products and the people who designed and built them.

Universal Environmental Instruments

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Revision as of 09:27, 1 March 2019 by MilesD (talk | contribs) (Created page with "Manufactured instruments to detect and monitor minute traces of toxic gases and warn of their presence.<ref>Clean Air - Volume 4, Issue 13 - Volume 7, Issue 27, Page 3</ref>...")
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Manufactured instruments to detect and monitor minute traces of toxic gases and warn of their presence.[1]


Sources of Information

  1. ↑ Clean Air - Volume 4, Issue 13 - Volume 7, Issue 27, Page 3
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