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1. National Public Radio
2. National Philharmoinic of Russia
3. Nevada Public Radio
4. National Partnership for Reinventing Government
5. Nuclear Posture Review
6. National Population Register
7. National Police Reserve
8. North Pennsylvania Railroad
9. Northern Plains Railroad
10. Northern Powerhouse Rail
11. Non Photorealistic rendering
12. Number of Permutations from a total of n objects
13. Nepalese Rupee
14. New Port Richey
15. National Partnership For Reinventing
16. Noise Power Ratio
17. National Percentile Ranking
18. No Particular Reason
19. National Propaganda Radio
20. National Palestine Radio
21. No Problem Reporting
22. Never Pay Retail
23. National Press Release
24. National Proletariat Radio
25. National Prosperous Radio
26. Noise Preferential Route
27. National Peoples Radio
28. National Pinko Radio
29. No Password Required
30. Northern Plains Railroad Incorporated
31. New Product Request
32. Naval Projections Report
33. No Public Restroom
34. No Pride Remaining
35. Nationalist Peoples Radio
36. Noiseless Portable Reflector
37. Nail Polish Remover
38. National Percentile Rank
39. National Parents Radio
40. Net Profit Ratio
41. National Pentagon Radio
42. National Petroleum Radio
43. No Power Restriction
44. NASA Procedural Requirements
45. National Pain Report
46. Norwegian Patient Registry
47. Natriuretic Peptide Receptor
48. Northwest Public Radio
49. North Polar Region
50. Northampton Pigeon Racing