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I also highly recommend "Finding your way without map or compass" https://www.amazon.com/Finding-Your-Way-Without-Compass/dp/048640613X https://www.amazon.com/
by secfirstmd 8y ago
I also highly recommend "Finding your way without map or compass"
https://www.amazon.com/Finding-Your-Way-Without-Compass/dp/048640613X https://www.amazon.com/Finding-Your-Way-Without-Compass/dp/0...