| NCA | National Certification Agency; National Council on Aging; National Council on Alcoholism; neurocircu... |
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| NHA | National Health Association; National Hearing Association; National Hemophilia Association; nonspeci... |
| NPF | nasopharyngeal fiberscope; National Parkinson Foundation; National Pharmaceutical Foundation; Nation... |
| NAACLS | National Accrediting Agency for Clinical Laboratory Sciences |
| NCAMLP | National Certification Agency for Medical Laboratory Personnel |
| united states national aeronautics and space administration | An independent federal agency established in 1958. It conducts research for the solution of problems of flight within and outside the earth's atmosphere and develops, constructs, tests, and operates aeronautical and space vehicles. (12 Dec 1998) |
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