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| English | French |
| National Automated Clearing House Association | Association nationale de la Chambre de Compensation Automatisée (An organization that operates the Automated Clearing House (ACH) Network) |
| National Folk | Folk national (One of the music genres that appears under Genre classification in Windows Media Player library. Based on ID3 standard tagging format for MP3 audio files. Winamp genre ID 82) |
| national language support API Set of system functions in 32-bit Windows containing information that is based on language and cultural conventions | API NLS (National Language Support) |
| National Register of Legal Entities | Registre national des personnes morales (A 14-digit identification number issued to Brazilian companies by the Brazilian Ministry of Revenue for tax purposes) |
| South African National Clearing Code | code de compensation national sud-africain (A series of numbers used to identify banks and transaction routing information for South African financial institutes) |