{"id":"S2003008879","label":"Echo sounding--Instruments","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2003008879","normalized_label":"echo sounding--instruments","broader":[],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2003008879","provider":"lcsh","revision":"416da09e051d0d77","taxonomy_revision":"f050b5d4780b1289","title":"Echo sounding--Instruments","url":"/topics/S2003008879","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"13873562979972556294","address_version":"morton4x16-v1","coordinates":[0,477,36341,48128],"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}