{"id":"S85037816","label":"Diesel locomotives","description":"Here are entered works on locomotives that employ an onboard diesel engine to generate electricity to turn the wheels, as well as locomotives whose diesel engines power the wheels through a gear box or through a hydraulic system. Works on locomotives that run alternatively by an external electric power supply or by an onboard diesel engine as needed are entered under [Electro-diesel locomotives.]","source_url":"https://id.loc.gov/authorities/subjects/sh85037816","normalized_label":"diesel locomotives","broader":["http://id.loc.gov/authorities/subjects/sh85077999"],"aliases":["Diesel locomotive engines","Diesel-electric locomotives","Locomotive diesels"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85037816","provider":"lcsh","revision":"718b21c99afb3a2a","taxonomy_revision":"f050b5d4780b1289","title":"Diesel locomotives","url":"/topics/S85037816","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"10124096635320549956","address_version":"morton4x16-v1","coordinates":[0,20,17995,57344],"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}