{"id":"S85110639","label":"Radioactive tracers in metallurgy","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85110639","normalized_label":"radioactive tracers in metallurgy","broader":["http://id.loc.gov/authorities/subjects/sh85084158"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85110639","provider":"lcsh","revision":"3a38a181b12c3630","taxonomy_revision":"f050b5d4780b1289","title":"Radioactive tracers in metallurgy","url":"/topics/S85110639","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9550103188120946180","address_version":"morton4x16-v1","coordinates":[0,20,19133,48128],"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}