# Economic history--20th century--Periodicals { "id": "S2009124600", "title": "Economic history--20th century--Periodicals", "url": "/topics/S2009124600", "kind": "topic-directory", "aeo_cohort": "topic-directory", "provider": "lcsh", "revision": "6f7e1deab8483711", "catalogue_revision": "f050b5d4780b1289", "numeric_address": "9835861887399912038", "address_version": "morton4x16-v1", "coordinates": [ 0, 479, 827, 57344 ], "answer_status": "Directory metadata; local answer requires separate source review", "truth_status": "Subject descriptor, not a factual answer or a demonstrated knowledge gap" } Directory metadata is not a factual answer or evidence of a global knowledge gap. Source: https://id.loc.gov/authorities/subjects/sh2009124600 No owner-reviewed local answer yet.