{"id":"S2024002039","label":"Over-the-horizon backscatter radar","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2024002039","normalized_label":"over-the-horizon backscatter radar","broader":["http://id.loc.gov/authorities/subjects/sh85010803","http://id.loc.gov/authorities/subjects/sh87004626"],"aliases":["OTH-B radar"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2024002039","provider":"lcsh","revision":"ab3c9fc3d887158b","taxonomy_revision":"f050b5d4780b1289","title":"Over-the-horizon backscatter radar","url":"/topics/S2024002039","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"14413995209058681956","address_version":"morton4x16-v1","coordinates":[0,482,36679,56320],"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}