{"id":"S92001039","label":"Helmet-mounted displays","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh92001039","normalized_label":"helmet-mounted displays","broader":["http://id.loc.gov/authorities/subjects/sh85066140"],"aliases":["HMD (Information displays)","Visually coupled displays"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh92001039","provider":"lcsh","revision":"9a71f480856da3ba","taxonomy_revision":"f050b5d4780b1289","title":"Helmet-mounted displays","url":"/topics/S92001039","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"4956435982418331138","address_version":"morton4x16-v1","coordinates":[0,21,61260,15360],"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}