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\begin{center}STATEMENT OF PERMISSION TO USE\end{center}


\hspace{.25in} In presenting this dissertation in partial requirements for a doctoral degree at
Montana State University, I agree
that the Library shall make it available to borrowers under rules of the Library.
I further agree that copying of this dissertation is allowable only for scholarly purposes,
consistent with ``fair use" as prescribed in the U.S. Copyright Law.
Requests for extensive copying or reproduction of this dissertation should be referred to Bell \& Howell
Information and Learning, 300 North Zeeb Road, Ann Arbor, Michigan 48106, to whom I have granted
``the exclusive right to reproduce and distribute my dissertation in and from microform along with the
non-exclusive right to reproduce and distribute my abstract in any format in whole or in part."
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