Methods of studying the size and composition of radio and television audience a comparison
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| 格式: | 圖書 |
| 語言: | English |
| 出版: |
[Helsinki, Oy.
Yleisradio Ab.
1969].
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| 叢編: | Finish Broadcasting Company. Section for Long-Range Planning. Research reports no. 8
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| 主題: |