{"id":"S2001009127","label":"Threshold limit values","description":"Use as a topical subdivision under individual chemicals and groups of chemicals.","source_url":"https://id.loc.gov/authorities/subjects/sh2001009127","normalized_label":"threshold limit values","broader":[],"aliases":["Exposure limits, Occupational","Maximum allowable concentrations","Occupational exposure limits"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2001009127","provider":"lcsh","revision":"4a54002731b846ca","taxonomy_revision":"f050b5d4780b1289","title":"Threshold limit values","url":"/topics/S2001009127","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9226899572520003142","address_version":"morton4x16-v1","coordinates":[0,477,5095,39936],"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}