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Authors
Author
Philip Siefer
Books
Business Purpose Design
Monika Smith, Shermin Voshmgir, Scot Carlson; Don Spampinato, Daniel Heltzel; Maren Beverung; Katharina Zwielich, Steffan Heuer, Christian Solmecke, Philip Siefer, Martin Sinner, Friedericke Rode, Curt Simon Harlinghausen