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Most libraries can & will do inter-library loans. In other words if your branch doesn't have the book available, they will have it sent from another branch for you to borrow. It usually only takes a few days to get it. This wonderful program saved me over $500.00 in one year.
If want your own copy try independent used book stores. The owners are helpful & if your a frequent customer they will keep an eye out for your books and let you know when it comes in.