RelBib: Results for "(11850004x OR 11860922x)"

https://relbib.de/search/results?filter[]=era_facet:"1948-1989"&filter[]=genre_facet:"Collection of essays"&filter[]=topic_facet:"Geach, P. T (Peter Thomas) 1916-"&lookfor=(11850004x OR 11860922x)&type=AllFields