“Half my advertising is wasted, I just don’t know which half,” John Wanamaker; https://t.co/xQJzRiQSoz #Marketing
"Half my advertising is wasted, I just don't know which half," John Wanamaker; https://t.co/xQJzRiQSoz#Marketing
— Jack Yoest (@JackYoest) November 26, 2016
from Twitter https://twitter.com/JackYoest
November 26, 2016 at 05:18PM
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