| Company | Category | Area | Address | Web | E-mail | Contact person |
| NATL COMMUNICATION SYSTEM | Gov'T Offices-Us | Virginia | 701 S COURTHOUSE RD, ARLINGTON, Arlington, Virginia, 22204-2198, USA |
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| NATL CONFER | Non-Profit Organizations | Virginia | 7708 GRIFFIN POND CT, SPRINGFIELD, Fairfax, Virginia, 22153-3915, USA |
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Jack Williamson |
| NATL COUNCIL CATHOLIC WOMEN | Religious Organization | Virginia | 200 N GLEBE RD, ARLINGTON, Arlington, Virginia, 22203-3728, USA |
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| NATL INST GENEALOGIC RSRC | Commercial Nonphysical Researc | Virginia | 121 TAPAWINGO RD SW, VIENNA, Fairfax, Virginia, 22180-5964, USA |
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Lynn McIllion |
| NATL INVESTIGATIONS SVC | Detective/armored Car Services | Virginia | 3500 VIRGINIA BEACH BLVD, VIRGINIA BCH, Virginia Beach (City, Virginia, 23452-4445, USA |
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Peter Tanheo |
| NATL INVESTIGATIONS SVC | Detective/armored Car Services | Virginia | 3500 VIRGINIA BEACH BLVD, VIRGINIA BCH, Virginia Beach (City, Virginia, 23452-4445, USA |
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Peter Tanheo |
| NATL LEAGUE OF POW MIA FAMILY | Civic/social Association | Virginia | 1005 N GLEBE RD STE 170, ARLINGTON, Arlington, Virginia, 22201-5758, USA |
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Joanne Shirley |
| NATL NURSES SERVICES | Employment Agency | Virginia | 347 FALMOUTH ST, WARRENTON, Fauquier, Virginia, 20186-3606, USA |
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| NATL REGISTRY INC | Employment Agency | Virginia | 11417 SUNSET HILLS RD STE 106, RESTON, Fairfax, Virginia, 20190-5233, USA |
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| NATL STARCH CHEM CO | Chemicals, Rel Pdts | Virginia | 4414 SARELLEN RD, RICHMOND, Henrico, Virginia, 23231-4440, USA |
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