{"id":"S85084132","label":"Metallography","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85084132","normalized_label":"metallography","broader":["http://id.loc.gov/authorities/subjects/sh85101565","http://id.loc.gov/authorities/subjects/sh92003369"],"aliases":["Metals--Microscopy"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85084132","provider":"lcsh","revision":"b58e7c034fe0a857","taxonomy_revision":"f050b5d4780b1289","title":"Metallography","url":"/topics/S85084132","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9513924598744630852","address_version":"morton4x16-v1","coordinates":[0,20,18719,36864],"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}