# Railroad engineering

{
  "id": "S85110872",
  "title": "Railroad engineering",
  "url": "/topics/S85110872",
  "kind": "topic-directory",
  "aeo_cohort": "topic-directory",
  "provider": "lcsh",
  "revision": "0a2df08ce5e47ee2",
  "catalogue_revision": "f050b5d4780b1289",
  "numeric_address": "900790570237166084",
  "address_version": "morton4x16-v1",
  "coordinates": [
    0,
    20,
    19137,
    24576
  ],
  "answer_status": "Directory metadata; local answer requires separate source review",
  "truth_status": "Subject descriptor, not a factual answer or a demonstrated knowledge gap"
}

Here are entered general works on railroad engineering, including surveying, construction, maintenance and repair, operation, etc. treated collectively.

Directory metadata is not a factual answer or evidence of a global knowledge gap.

Source: https://id.loc.gov/authorities/subjects/sh85110872

No owner-reviewed local answer yet.