RelBib: Results for "(11850021x OR 11850553x)"
https://relbib.de/search/results?filter[]=era_facet:"08.03.2019-09.03.2019"&filter[]=genre_facet:"Conference program"&filter[]=~format:"Book"&filter[]=~language:"German"&lookfor=(11850021x OR 11850553x)&type=AllFields