{"id":"S85047890","label":"Ferrous sulfate","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85047890","normalized_label":"ferrous sulfate","broader":["http://id.loc.gov/authorities/subjects/sh85047889","http://id.loc.gov/authorities/subjects/sh85130337"],"aliases":["Copperas","Ferrous sulphate","Green vitriol","Iron sulfate","Iron vitriol","Vitriol, Green","Vitriol, Iron"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85047890","provider":"lcsh","revision":"38ce1dbbe7b25b1d","taxonomy_revision":"f050b5d4780b1289","title":"Ferrous sulfate","url":"/topics/S85047890","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"864836540013101572","address_version":"morton4x16-v1","coordinates":[0,20,18153,18432],"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}