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8 nov 1978 - Широко используются количественные методы опроса. К показателям эффективности СМИ относится охват аудитории.

Ajouté au bande de temps:

ЭТАПЫ

ByЛюбовь Никифорова
23 oct. 2018
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Date:

8 nov 1978
Maintenaint
~ Il y a 46 ans
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