{
  "id": "UN974",
  "name": "British thermal unit (39 \u00b0F)",
  "ml_name": "ip_Btu_(39_deg_F)",
  "symbol": "Btu",
  "reference": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8#B"
}