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| Corporate Authors: | , |
|---|---|
| 格式: | 序列 |
| 語言: | German |
| 出版: |
Hagen, Germany :
Zentrales Institut für Fernstudienforschung,
[197-]-.
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| 主題: |
| 出版: | 1- |
|---|---|
| Item Description: | Description based on: 26. Each issue also has a distinctive title. At head of cover title: Fern Universität Hagen. |
| 實物描述: | v. : ill. ; 30 cm. |