{"id":"S85084832","label":"Microfilm aperture card systems","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85084832","normalized_label":"microfilm aperture card systems","broader":["http://id.loc.gov/authorities/subjects/sh85029541","http://id.loc.gov/authorities/subjects/sh85042288","http://id.loc.gov/authorities/subjects/sh85066163","http://id.loc.gov/authorities/subjects/sh85084851","http://id.loc.gov/authorities/subjects/sh85109085"],"aliases":["Aperture card systems","IBM aperture card systems"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85084832","provider":"lcsh","revision":"7634dd13bbcb8c9d","taxonomy_revision":"f050b5d4780b1289","title":"Microfilm aperture card systems","url":"/topics/S85084832","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9511672798934876736","address_version":"morton4x16-v1","coordinates":[0,20,18730,32768],"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}