المؤلفون: Klaus Kreiser; Raoul Motika; Udo Steinbach; Charlotte Joppien; Ludwig Schulz
الإتاحة: http://link.springer.com/openurl?genre=book&isbn=978-3-658-04324-7Testhttp://www.doabooks.org/doab?func=search&query=rid:16191Test
الوصول الحر: http://europeana.eu/portal/record/9200235/BibliographicResource_3000113664593.htmlTest
الوصول الحر: https://www.europeana.eu/item/9200235/openurl_genre_book_isbn_978_3_658_04324_7?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCaTest