RelBib: Results for "(((11850522x OR 11850598x) OR 11854523x) OR 11850553x)"

https://relbib.de/search/results?filter[]=~author_facet:"Petzoldt, Martin 1946-2015"&filter[]=~author_facet:"Steiger, Renate 1934-2006"&filter[]=~mediatype:"Non-Electronic"&filter[]=~publisher_facet:"Frommann-Holzboog"&filter[]=~relbib_notation_facet:"[Unassigned]"&lookfor=(((11850522x OR 11850598x) OR 11854523x) OR 11850553x)&type=AllFields