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<p>[QUOTE=&quot;physics-fan3.14, post: 2043316, member: 19165&quot;]I have no credentials, or previously published materials. I have 20 years of learning and experience, and I will let my reputation and posting speak for that. It is my first book, and it will (probably) be most useful for beginners. I have a scientific and engineering background, and I hope my approach will bring a different perspective to the subject. Because of this, I think that intermediate level collectors will be given something to think about.[/QUOTE]</p><p><br /></p>

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