# Movable bed models (Hydraulic engineering) { "id": "S90002383", "title": "Movable bed models (Hydraulic engineering)", "url": "/topics/S90002383", "kind": "topic-directory", "aeo_cohort": "topic-directory", "provider": "lcsh", "revision": "0147bad1de49eeca", "catalogue_revision": "f050b5d4780b1289", "numeric_address": "345805220275701318", "address_version": "morton4x16-v1", "coordinates": [ 0, 21, 30031, 15360 ], "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/sh90002383 No owner-reviewed local answer yet.