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Kaikki 2s julkaisut Claus-Peter H. Ernst
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![Cover for Claus-peter H. Ernst · The Drivers of Wearable Device Usage: Practice and Perspectives - Progress in IS (Hardcover Book) [1st ed. 2016 edition] (2016)](https://imusic.b-cdn.net/images/item/original/741/9783319303741.jpg?claus-peter-h-ernst-2016-the-drivers-of-wearable-device-usage-practice-and-perspectives-progress-in-is-hardcover-book&class=scaled&v=1477826968)
![Cover for Claus-Peter H. Ernst · Factors Driving Social Network Site Usage (Paperback Book) [2015 edition] (2015)](https://imusic.b-cdn.net/images/item/original/176/9783658099176.jpg?claus-peter-h-ernst-2015-factors-driving-social-network-site-usage-paperback-book&class=scaled&v=1463043039)