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Shel Horowitz's 8th book, Guerrilla Marketing Goes Green, was featured on this news billboard in Times Square. Photo credit: PR Newswire.

Shel Horowitz’s 8th book, Guerrilla Marketing Goes Green, was featured on this news billboard in Times Square. Photo credit: PR Newswire.

Shel Horowitz’s 8th book, Guerrilla Marketing Goes Green, was featured on this news billboard in Times Square. Photo credit: PR Newswire.