| | Assoc.prof.Mihal, Stoyanov On the unexhausted potential of classical advertising media [Текст] / Stoyanov Assoc.prof.Mihal, Ph.D. // Economics 21 : Interuniversity journal. — Svishtov, Varna, Sofia : "Tsenov" Academic Publishing House, 2012. — Book 2. — C. 111-124. |
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