Copyright 1976 Edrie L. Vinson. In presenting this thesis in partial fulfillment of the requirements for an advanced degree at Montana State University, I agree that the Library shall make i t freely available for inspection. I further agree that permission for extensive copying of this thesis for scholarly purposes may be granted by my major professor, or, in
his absence, by the Director of Libraries. It is understood that any
copying or publication of t h is thesis for financial gain shall not be
allowed without my written permission.
