RelBib: Results for "118594117~"
https://relbib.de/search/results?filter[]=is_open_access:"non-open-access"&filter[]=~author_facet:"Planck, Max 1858-1947"&filter[]=~dewey-hundreds:"500 - Natural sciences and mathematics"&filter[]=~language:"German"&filter[]=~publisher_facet:"Barth"&filter[]=~publisher_facet:"Beltz"&lookfor=118594117~&type=AllFields