http://www.w3.org/ns/prov#value | - it is used in addition to the Players Handbook 3 - so if you do not have that you do not need this book.I have a DDI (Dungeons and Dragons Insider) account which gives me all of the class and power information from this book, but it is still great to have the books themselves for a much higher level of detail about the classes and other information.
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