RelBib: Results for "(11850522x OR 16750553x)" https://relbib.de/search/results?filter[]=~relbib_notation_facet:"KBB"&filter[]=~relbib_notation_facet:"TK"&filter[]=~relbib_notation_facet:"[Unassigned]"&lookfor=(11850522x OR 16750553x)&type=AllFields