Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 143,439 pages of information and 230,054 images on early companies, their products and the people who designed and built them.

Leonard S. B. Alder

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Leonard S. B. Alder

Senior Scientific Officer, Admiralty Dept. Scientific Research, Experimental Dept., H.M. Signal School, R.N. Barracks, Portsmouth.

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