U.S. Civil Service Commission announces examination for operations research analyst, $7,510-$12,770 a year (grades GS-11 to GS-15), specialized fields, operations research, physical sciences, biological sciences, engineering, mathematics, mathematical and experimental statistics, economics, experimental psychology, apply to Executive Secretary, Board of U.S. Civil Service Examiners, Headquarters, U.S. Air Force, Washington 25, D.C., announcement 193B.