All 1 Helge Petersohn releases on Paperback Book
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![Cover for Helge Petersohn · Data Mining (Paperback Book) [German edition] (2005)](https://imusic.b-cdn.net/images/item/original/150/9783486577150.jpg?helge-petersohn-2005-data-mining-paperback-book&class=scaled&v=1416508260)