{"id":"S85016097","label":"Boundary layer control","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85016097","normalized_label":"boundary layer control","broader":["http://id.loc.gov/authorities/subjects/sh85001301","http://id.loc.gov/authorities/subjects/sh85039270","http://id.loc.gov/authorities/subjects/sh85049376"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85016097","provider":"lcsh","revision":"ff67acc60ab5c996","taxonomy_revision":"f050b5d4780b1289","title":"Boundary layer control","url":"/topics/S85016097","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9511615608291475968","address_version":"morton4x16-v1","coordinates":[0,20,17656,33792],"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}