{"data":{"id":"us/40-cfr-52.18","jurisdiction":"us","citation":"40 CFR 52.18","heading":"Abbreviations.","body":"Abbreviations used in this part shall be those set forth in part 60 of this chapter.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 52—APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS","Subpart A—General Provisions"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"b171526245e15f9ca60fe15090a73efaee60842d9af0f34330fa6c165720c7e5","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-52.17","next":"us/40-cfr-52.20"},"notice":"GroundRules: Original legal text. Not legal advice."}