**Edit: Since reading this book I have discovered that it's full of mistakes and typos, especially annoying when numbers are missing in calculations and results of calculations.**
The author has taken every opportunity possible to mention another one of their products in a cringe-worthy/desperate and unprofessional attempt to flog even more Pooleys branded gear - so instead if feeling like this book is here to facilitate my learning, I feel like I'm being taught navigation by a Pooley's sales rep trying to sell me a CRP-1 and a copy of the Pooley's Flight Guide.
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