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The Four Disciplines
| Sean Covey 외
ǻ | Free Press
The Outlook for HDTV
In the late 1990s, when the first television channels began offering high-definition television, few U.S. households had HDTV sets to receive the signals, and it’s no wonder: Shows in high-def were scarce, and the average price of an HDTV set was $3,147. 
Authenticity
| James H. Gilmore 외
ǻ | Business School Press
The Upside
| Adrian J. Slywotzky 외
ǻ | Crown Business
Here Comes Everybody
| Clay Shirky
ǻ | Allen Lane