{"id":"S85000818","label":"Addition polymerization","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85000818","normalized_label":"addition polymerization","broader":["http://id.loc.gov/authorities/subjects/sh89001625"],"aliases":["Anionic polymerization","Cationic polymerization","Chain addition polymerization","Chain-growth polymerization","Free-radical polymerization","Ionic polymerization"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85000818","provider":"lcsh","revision":"9dcf44f3bc50dd4c","taxonomy_revision":"f050b5d4780b1289","title":"Addition polymerization","url":"/topics/S85000818","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"10088208300844925444","address_version":"morton4x16-v1","coordinates":[0,20,17417,51200],"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}