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The best research database out there, which is 100% free, is at:
I already searched for your keywords, and there are plenty of articles and book citations referenced there.
Other stops: Questia.com and
These three are all general databases, which mostly target articles.
Finally, worldcat.org is one of the best sites to look for books. It will give you where the nearest library, which is currently holding the book, is and directions.
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