Supplement to announcement 406 for librarian, $4,205 to $7,040 a year (grades GS-7 through GS-12), for duty in various Federal agencies in Wash., D. C., and vicinity, optional fields, 1, acquisitions, 2, cataloging and classification, 3, reference and bibliography, 4, general (for grades GS-7 and 9 only), 5, administration (for grades GS-11 and 12 only).