This web site may contain copyrighted material the use of which has not always been specifically authorized by the copyright owner. I am making such material available in my efforts to advance the understanding of humanity's problems and hopefully to help find solutions for those problems.
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Consistent with this notice you are welcome to make "fair use" of anything you find on this web site. However, if you wish to use copyrighted material from this site for purposes of your own that go beyond "fair use," you must obtain permission from the copyright owner.