2009-05-182009-05-1819920268-3679urn:nbn:de:hebis:34-2009051827598http://hdl.handle.net/123456789/20090518275981441891 bytesapplication/pdfengUrheberrechtlich geschützthttps://rightsstatements.org/page/InC/1.0/510Teaching and learning of mathematics and its applicationsAufsatz