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| 說明 | 1 online resource (508 pages) |
| 文字 | text |
| 無媒介 | computer |
| 成冊 | online resource |
| 附註 | Source: Dissertations Abstracts International, Volume: 34-07, Section: A |
| Publisher info.: Dissertation/Thesis |
| Thesis (Ph.D.)--Northwestern University, 1973 |
| Includes bibliographical references |
| Electronic reproduction. Ann Arbor, Mich. : ProQuest, 2020 |
| Mode of access: World Wide Web |
| 主題 | Education |
| Electronic books. |
| 0515 |
| ISBN/ISSN | 9798659932803 |
