{"id":"S2015000020","label":"Marine engines--Exhaust gas","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2015000020","normalized_label":"marine engines--exhaust gas","broader":["http://id.loc.gov/authorities/subjects/sh85028840"],"aliases":["Emissions, Marine engine","Exhaust gas, Marine engine","Marine engine emissions","Marine engine exhaust gas","Marine engines--Emissions"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2015000020","provider":"lcsh","revision":"c7b8e26da9537b97","taxonomy_revision":"f050b5d4780b1289","title":"Marine engines--Exhaust gas","url":"/topics/S2015000020","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"885027723005920324","address_version":"morton4x16-v1","coordinates":[0,480,27095,20480],"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}