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  "json_url": "https://openlegislation.uk/pressure-systems-and-transportable-gas-containers-regulations-northern-ireland-1991.json",
  "id": "nisr/1991/471",
  "title": "The Pressure Systems and Transportable Gas Containers Regulations (Northern Ireland) 1991",
  "short_title": "Pressure Systems and Transportable Gas Containers 1991",
  "long_title": null,
  "citation": "S.R. 1991/471",
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  "year": "1991",
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      "affecting_title": "Pressure Systems Safety Regulations (Northern Ireland) 2004",
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  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
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}