@inbook{urn:nbn:de:hebis:34-2010042732723, author ={Nutzinger, Hans G.}, title ={Wirtschaftstheorie}, keywords ={320 and 330 and Wirtschaftstheorie and Lemma}, copyright ={https://rightsstatements.org/page/InC/1.0/}, language ={de}, year ={1972} }