{"id":"S85002628","label":"Air drilling (Petroleum engineering)","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85002628","normalized_label":"air drilling (petroleum engineering)","broader":["http://id.loc.gov/authorities/subjects/sh85015851","http://id.loc.gov/authorities/subjects/sh85053366","http://id.loc.gov/authorities/subjects/sh85094378"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85002628","provider":"lcsh","revision":"dc5fb3f20a50fbe9","taxonomy_revision":"f050b5d4780b1289","title":"Air drilling (Petroleum engineering)","url":"/topics/S85002628","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"290486574016235072","address_version":"morton4x16-v1","coordinates":[0,20,17446,4096],"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}