Chinnaiya, S.S රජයේ දෙපාර්තමේන්තුවල කාර්යාල කළමනාකරණය - Sri Lanka Institute of Development Administration (SLIDA) Colombo 1989 - 90p. - Office Management Sri Lanka File Management Nat. Bib. No.: 5682 Nat. Bib. Agency Control No.: 651 (548.7) CHI Subjects--Topical Terms: Management Universal Decimal Class. No.: 651(548.7)