RelBib: Results for "(11850021x OR 11850553x)"

https://relbib.de/search/results?filter[]=~author_facet:"Schmidt, Johann Michael 1934-"&filter[]=~dewey-hundreds:"800 - Literature (Belles-lettres) and rhetoric"&filter[]=~dewey-hundreds:"900 - History & geography"&lookfor=(11850021x OR 11850553x)&type=AllFields