Careers for dental auxiliaries, dental assistant, grade GS-4, dental hygienist, grades GS-4 and GS-5, dental technician, grades GS-5, GS-6, GS-7, for work in Washington, D.C, area, apply to Interagency Board of U.S. Civil Service Examiners for Washington, D.C, announcement WA-7421 (local).