Related papers: Brauer groups and Tate-Shafarevich groups, II

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This paper has been withdrawn by the author; see the much expanded, improved, and generalized version at arXiv:0811.2080.

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This paper has been withdrawn by the author, due to errors in Groebner basis calculations in the cases of five and six dimensional groups.

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This paper has been withdrawn by the author due to similarity to Author's other paper

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