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Are you David Halsey, author of the books below?
Magnetic North by David Halsey Trading the Measured Move by David Halsey Trading the Measured Move by David Halsey Halsey Genealogy Since 1395 A.D., Book Two by David Halsey Halsey Genealogy Since 1395 A. D. by David Halsey Handbook of Interferometers by David Halsey A KNOWLEDGE ODYSSEY by David Halsey Goin' Back in Time For a Visit With Ancestors by David Halsey Magnetic North by David Halsey Assignment Photography by American Society Of Magazin...


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