{"id":"S96003845","label":"Water--Purification--Fixed-film biological process","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh96003845","normalized_label":"water--purification--fixed-film biological process","broader":["http://id.loc.gov/authorities/subjects/sh85145480"],"aliases":["Fixed-film biological process (Water purification)","Water--Purification--Biofiltration"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh96003845","provider":"lcsh","revision":"21baeb0168770c4b","taxonomy_revision":"f050b5d4780b1289","title":"Water--Purification--Fixed-film biological process","url":"/topics/S96003845","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"4920191682127218208","address_version":"morton4x16-v1","coordinates":[0,22,58268,5120],"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}