Mark J. Penn

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MicrotrendsMark J. Penn, Mark Penn et al.
Microtrends
Mark J. Penn, Mark Penn, E. Kinney Zalesne · 2007 · 425 pages
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Microtrends squaredMark J. Penn
Microtrends squared
Mark J. Penn · 2018 · 413 pages
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microtrendsMark J. Penn, Mark Penn
microtrends
Mark J. Penn, Mark Penn · 2007
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