Revision history of "Hughes, 1971, Elmer Sperry"

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  • curprev 11:38, 21 October 2021LTA talk contribs 915 bytes +915 Created page with "Thomas Parke Hughes. ''Elmer Sperry: inventor and engineer''. Johns Hopkins Press, 1971. * [https://archive.org/details/elmersperryinven0000hugh/ Scan] available to "borrow"..."