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Small, James B. (2013). The Analogue Alternative: The Electronic Analogue Computer in Britain and the USA, 1930-1975. Taylor & Francis. ISBN 9781134699025. Retrieved 2021-08-11. 9781134699025
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Small, James B. (2013). The Analogue Alternative: The Electronic Analogue Computer in Britain and the USA, 1930-1975. Taylor & Francis. ISBN 9781134699025. Retrieved 2021-08-11. 9781134699025