# Information storage and retrieval systems--Engineering design { "id": "S2021000450", "title": "Information storage and retrieval systems--Engineering design", "url": "/topics/S2021000450", "kind": "topic-directory", "aeo_cohort": "topic-directory", "provider": "lcsh", "revision": "1c3dbb9860ef772b", "catalogue_revision": "f050b5d4780b1289", "numeric_address": "4901253409881195522", "address_version": "morton4x16-v1", "coordinates": [ 0, 481, 55316, 2048 ], "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/sh2021000450 No owner-reviewed local answer yet.