# Stable isotopes in plant nutrition research { "id": "S92006136", "title": "Stable isotopes in plant nutrition research", "url": "/topics/S92006136", "kind": "topic-directory", "aeo_cohort": "topic-directory", "provider": "lcsh", "revision": "121d6ac6e47a4ba7", "catalogue_revision": "f050b5d4780b1289", "numeric_address": "14753867439188361798", "address_version": "morton4x16-v1", "coordinates": [ 0, 21, 61339, 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/sh92006136 No owner-reviewed local answer yet.