# Internal combustion engines--Valves

{
  "id": "S85067333",
  "title": "Internal combustion engines--Valves",
  "url": "/topics/S85067333",
  "kind": "topic-directory",
  "aeo_cohort": "topic-directory",
  "provider": "lcsh",
  "revision": "b667b5b2ac438740",
  "catalogue_revision": "f050b5d4780b1289",
  "numeric_address": "290561340803006980",
  "address_version": "morton4x16-v1",
  "coordinates": [
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    20,
    18457,
    5120
  ],
  "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/sh85067333

No owner-reviewed local answer yet.