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@unpublished{urn:nbn:de:hebis:34-2006061413383, author ={Winkler, Helmut}, title ={Ursachen für überlange Studiendauern von Maschinenbaustudenten}, keywords ={370 and Student and Maschinenbau and Kassel / Universität}, copyright ={https://rightsstatements.org/page/InC/1.0/}, language ={de}, year ={1988} }