Methods of studying the size and composition of radio and television audience a comparison
| Autor principal: | |
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| Format: | Llibre |
| Idioma: | English |
| Publicat: |
[Helsinki, Oy.
Yleisradio Ab.
1969].
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| Col·lecció: | Finish Broadcasting Company. Section for Long-Range Planning. Research reports no. 8
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| Matèries: |