{"id":"S2002000656","label":"Reinforced concrete--Electrochemical chloride extraction","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2002000656","normalized_label":"reinforced concrete--electrochemical chloride extraction","broader":["http://id.loc.gov/authorities/subjects/sh85033050","http://id.loc.gov/authorities/subjects/sh85046579"],"aliases":["Chloride extraction, Electrochemical, from reinforced concrete","Electrochemical chloride extraction from reinforced concrete"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2002000656","provider":"lcsh","revision":"62c76828104e509b","taxonomy_revision":"f050b5d4780b1289","title":"Reinforced concrete--Electrochemical chloride extraction","url":"/topics/S2002000656","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"865817037593798146","address_version":"morton4x16-v1","coordinates":[0,477,20588,16384],"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}