{"id":"S85084162","label":"Metallurgy--Ion exchange process","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85084162","normalized_label":"metallurgy--ion exchange process","broader":["http://id.loc.gov/authorities/subjects/sh85063469","http://id.loc.gov/authorities/subjects/sh85067796"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85084162","provider":"lcsh","revision":"8f7508b40072c59a","taxonomy_revision":"f050b5d4780b1289","title":"Metallurgy--Ion exchange process","url":"/topics/S85084162","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"288441499568439808","address_version":"morton4x16-v1","coordinates":[0,20,18720,2048],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}