RelBib: Results for "(11850021x OR 11860922x)" https://relbib.de/search/results?filter[]=~author_facet:"Groh, Ruth 1934-2021"&filter[]=~author_facet:"Unruh, Peter 1965-"&filter[]=~format:"Book"&lookfor=(11850021x OR 11860922x)&type=AllFields