US Historical Newspapers Readership Surveys, 1929-1970.
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The focus of this data collection was the historical overlap in readership of US daily newspapers in several city markets in the period spanning 1929-1970. These data are obtained from readership surveys conducted by the newspapers themselves or by advertising associations. The data report the average daily readership of groups of daily newspapers in a given city and year.<br>The sampling is determined by the newspapers or the advertising associations that conducted the readership surveys.<br>
创建时间:
2019-01-01



