{"id":"S92006138","label":"Stable isotopes in soil fertility research","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh92006138","normalized_label":"stable isotopes in soil fertility research","broader":["http://id.loc.gov/authorities/subjects/sh92006140"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh92006138","provider":"lcsh","revision":"703a51fc50951a19","taxonomy_revision":"f050b5d4780b1289","title":"Stable isotopes in soil fertility research","url":"/topics/S92006138","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"14754008176676717126","address_version":"morton4x16-v1","coordinates":[0,21,61339,59392],"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}