{"id":"S85079338","label":"Machine shops--Heating and ventilation","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85079338","normalized_label":"machine shops--heating and ventilation","broader":[],"aliases":["Machine shops--Ventilation"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85079338","provider":"lcsh","revision":"d476a604a824c975","taxonomy_revision":"f050b5d4780b1289","title":"Machine shops--Heating and ventilation","url":"/topics/S85079338","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9547842317399229952","address_version":"morton4x16-v1","coordinates":[0,20,18644,43008],"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}