{"id":"S85141732","label":"Vacuum concrete process","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85141732","normalized_label":"vacuum concrete process","broader":["http://id.loc.gov/authorities/subjects/sh85141743"],"aliases":["Concrete construction--Vacuum process","Vacuum processing of concrete"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85141732","provider":"lcsh","revision":"82d20a26ef6b9633","taxonomy_revision":"f050b5d4780b1289","title":"Vacuum concrete process","url":"/topics/S85141732","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9513928980688929348","address_version":"morton4x16-v1","coordinates":[0,20,19619,36864],"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}