"eBook ISBN","Title","Subtitle","Authors/editors","Copyright year","Edition","DOI","Price (EUR)","Additional info"
"978-3-322-91732-4","Marktforschung","Methodische Grundlagen und praktische Anwendung","Ludwig Berekoven",1989,"4","https://doi.org/10.1007/978-3-322-91732-4",155,""