{"id":"S2021000870","label":"Information storage and retrieval systems--Optics","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2021000870","normalized_label":"information storage and retrieval systems--optics","broader":[],"aliases":["Optics--Information storage and retrieval systems"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2021000870","provider":"lcsh","revision":"7166cd557a614451","taxonomy_revision":"f050b5d4780b1289","title":"Information storage and retrieval systems--Optics","url":"/topics/S2021000870","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"14126877246549672002","address_version":"morton4x16-v1","coordinates":[0,481,55322,38912],"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}