{"id":"S2010006131","label":"Rural-urban migration--Mathematical models","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2010006131","normalized_label":"rural-urban migration--mathematical models","broader":[],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2010006131","provider":"lcsh","revision":"296e416f1e19da0f","taxonomy_revision":"f050b5d4780b1289","title":"Rural-urban migration--Mathematical models","url":"/topics/S2010006131","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9819193016240464422","address_version":"morton4x16-v1","coordinates":[0,479,14601,52224],"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}