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Willehalm Wolframs von Eschenbach. Entstehung und Bedeutung im historischen Kontext Hoffmann Frank Heftet / 2016 / Tysk
Wasserversorgung Gewinnung - Aufbereitung - Speicherung - Verteilung Hoffmann Frank Heftet / 2022 / Tysk
Guide to Popular U.S. Government Publications, 1992-1995 Hoffmann Frank W. Innbundet / 1997 / Engelsk
Information Processing and Management of Uncertainty in Knowledge-Based Systems 13th International Conference, IPMU 2010, Dortmund, Germany, June 28–July 2, 2010. Proceedings, Part II Hüllermeier, Eyke Heftet / 2010 / Engelsk
Information Processing and Management of Uncertainty in Knowledge-Based Systems 13th International Conference, IPMU 2010, Dortmund, Germany, June 28–July 2, 2010. Proceedings, Part I Hüllermeier, Eyke Heftet / 2010 / Engelsk
Computational Intelligence for Knowledge-Based System Design 13th IPMU Conference, Dortmund, Germany, June 28 - July 2, 2010. Proceedings Hüllermeier, Eyke Heftet / 2010 / Engelsk
