This is not a question, but I am posting this url as a reference for locating th e used books that are often mentioned on this website. It doesn't do much good t o know about a book if you can't find a copy. The website searches the listings of many dealers in new & used books, so you can shop for the best prices. I am n ot affiliated with Abe Books, but turn to them often when I need something, or w ant to appraise a book that I have. I'm sure others will be able to add more goo d websites.
http://www.abebooks.com/
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