{"id":"S85014923","label":"Blocking oscillators","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85014923","normalized_label":"blocking oscillators","broader":["http://id.loc.gov/authorities/subjects/sh85095903"],"aliases":["Oscillators, Blocking"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85014923","provider":"lcsh","revision":"7ca7e99893cbec4a","taxonomy_revision":"f050b5d4780b1289","title":"Blocking oscillators","url":"/topics/S85014923","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"324413105943742016","address_version":"morton4x16-v1","coordinates":[0,20,17638,11264],"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}