Jerry
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My 2015 Events
1509 NYC
1509 Read My Thoughts: How to Use Mind-Mapping Tool "The Brain" To Get Smarter
Useful Starting Points for Understanding Jerry's Brain
Enumerated Wisdom
3 Principles of REX
Presence
Finding Your Location
Sky and Sextant: Practical Celestial Navigation
Attachments
Practical celestial navigation: John P Budlong: 9780442211400: Amazon.com: Books
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Finding Your Location
John Budlong
Sextants (1731)