British Radio Valves
The Vintage Years: 1904-1925

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 Keith R.Thrower
British Radio Valves - The Vintage Years: 1904-1925.
Published by Speedwell, England, 1999.
A complete history of British valves and their manufacturers. Contains both receiving and transmission valves of various shapes. A very interesting document with glossary and tube tables.
ISBN 0-9537166-0-0

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