{"id":"S85076743","label":"Libretto","description":"Here are entered works on the history and criticism of the libretto and on libretto writing. Miscellaneous collections of librettos are entered under the heading [Librettos.]","source_url":"https://id.loc.gov/authorities/subjects/sh85076743","normalized_label":"libretto","broader":["http://id.loc.gov/authorities/subjects/sh89005509"],"aliases":["Libretto--History and criticism","Librettos--History and criticism"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85076743","provider":"lcsh","revision":"bc965765adf29b00","taxonomy_revision":"f050b5d4780b1289","title":"Libretto","url":"/topics/S85076743","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"290702079369037312","address_version":"morton4x16-v1","coordinates":[0,20,18604,7168],"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}