Thesis (Ph.D.)--University of Michigan, 1974.
Includes bibliographical information.
Microfilm. Ann Arbor : Xerox University Microfilms, 1975. 1 microfilm reel : ill., charts, positive ; 35 mm. Microfilm. Ann Arbor : Xerox University Microfilms, 1975. 1 microfilm reel : ill., charts, positive ; 35 mm. Microfilm. Ann Arbor : Xerox University Microfilms, 1975. 1 microfilm reel : ill., charts, positive ; 35 mm. Microfilm. Ann Arbor : Xerox University Microfilms, 1975. 1 microfilm reel : ill., charts, positive ; 35 mm. Microfilm. Ann Arbor : Xerox University Microfilms, 1975. 1 microfilm reel : ill., charts, positive ; 35 mm.
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