{"id":"S85011131","label":"Balance springs--Isochronism","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85011131","normalized_label":"balance springs--isochronism","broader":["http://id.loc.gov/authorities/subjects/sh85062073"],"aliases":["Isochronism of balance springs"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85011131","provider":"lcsh","revision":"d36011df94480e94","taxonomy_revision":"f050b5d4780b1289","title":"Balance springs--Isochronism","url":"/topics/S85011131","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"10124245895034847808","address_version":"morton4x16-v1","coordinates":[0,20,17578,60416],"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}