{"id":"S85135421","label":"Time-of-flight mass spectrometry","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85135421","normalized_label":"time-of-flight mass spectrometry","broader":["http://id.loc.gov/authorities/subjects/sh85081907","http://id.loc.gov/authorities/subjects/sh85135420"],"aliases":["TOFMS (Time-of-flight mass spectrometry)"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85135421","provider":"lcsh","revision":"aa85ce975f06d2ab","taxonomy_revision":"f050b5d4780b1289","title":"Time-of-flight mass spectrometry","url":"/topics/S85135421","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"10126427325093511680","address_version":"morton4x16-v1","coordinates":[0,20,19520,62464],"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}