Announcing examination for specialists in following fields of social work, child welfare, GS-12 and 13, juvenile delinquency, GS-12 and 13, research, GS-11 and 12, medical social work, GS-11 and 12, $7,030-$9,890 a year, for duty in Children's Bureau, announcement 91B, Dec. 11, 1956, revised Jan. 1959.