{"id":"S2008003867","label":"Magnesium alloys--Acoustic properties","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2008003867","normalized_label":"magnesium alloys--acoustic properties","broader":[],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2008003867","provider":"lcsh","revision":"42dba46eca83c708","taxonomy_revision":"f050b5d4780b1289","title":"Magnesium alloys--Acoustic properties","url":"/topics/S2008003867","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"5243540451717686816","address_version":"morton4x16-v1","coordinates":[0,478,48852,27648],"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}