{"id":"S91001474","label":"Upper atmosphere--Gun probe observations","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh91001474","normalized_label":"upper atmosphere--gun probe observations","broader":["http://id.loc.gov/authorities/subjects/sh85011312","http://id.loc.gov/authorities/subjects/sh85084341"],"aliases":["Gun probe observations of the upper atmosphere","Gun probes (Aeronomy)","High altitude gun launched research"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh91001474","provider":"lcsh","revision":"ec9008a21008cb7b","taxonomy_revision":"f050b5d4780b1289","title":"Upper atmosphere--Gun probe observations","url":"/topics/S91001474","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"4630967329277231682","address_version":"morton4x16-v1","coordinates":[0,21,45642,2048],"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}