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    Re: Borrowed Bygrave
    From: Gary LaPook
    Date: 2023 Dec 19, 11:40 -0800

    Try this link:    https://navlist.net/find/bygrave-from-date-2008-to-date-2025-author-is-lapook  

    and this:  https://sites.google.com/site/fredienoonan/other-flight-navigation-information/modern-bygrave-slide-rule

       
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