{"id":"S85067789","label":"Ion acoustic waves","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85067789","normalized_label":"ion acoustic waves","broader":["http://id.loc.gov/authorities/subjects/sh85103089"],"aliases":["Ion plasma waves","Ion waves","Ionic waves"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85067789","provider":"lcsh","revision":"b228b16870ce7a7c","taxonomy_revision":"f050b5d4780b1289","title":"Ion acoustic waves","url":"/topics/S85067789","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"326590137825886720","address_version":"morton4x16-v1","coordinates":[0,20,18464,13312],"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}