{"id":"S85141736","label":"Vacuum metallurgy","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85141736","normalized_label":"vacuum metallurgy","broader":["http://id.loc.gov/authorities/subjects/sh85042191","http://id.loc.gov/authorities/subjects/sh85084158","http://id.loc.gov/authorities/subjects/sh85141743"],"aliases":["Metallurgy, Vacuum"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85141736","provider":"lcsh","revision":"8fc7aca371f08c92","taxonomy_revision":"f050b5d4780b1289","title":"Vacuum metallurgy","url":"/topics/S85141736","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9547705977894208068","address_version":"morton4x16-v1","coordinates":[0,20,19619,40960],"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}