| 载体形态 |
v, 120 p : graphs, tables. |
| Thesis |
Thesis (Ph. D.)--University of Chicago, 1975. |
| Bibliography |
Bibliography: p. 114-120. |
| Reproduction |
Microfilm. Chicago, Ill : University of Chicago, Joseph Regenstein Library, Dept. of Photoduplication, 1975. 1 microfilm reel ; 35 mm. |
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