People might find the following rticles of interest:
Philip Dutton ‘Living pictures out of space: the forlorn hopes for
television in pre-1939 London’ Historical Journal of Film, Radio and
Television Volume 24 Number 2/June 2004 Carfax
Guy Starkey ‘Estimating audiences: sampling in television and radio
audience research’ Cultural Trends Volume 13, Number 1 / March 2004
Routledge
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