Kumar, Krishan Reference service / Krishan Kumar - 5th rev. ed. - Ghaziabad, India : Vikas ; 1987 - vii, 446 p. ; 23 cm. ISBN: 9780706986426 LCCN: 62000434 Nat. Bib. No.: GB61-21790 Subjects--Topical Terms: Reference services (Libraries) LC Class. No.: Z711 / .R32 Dewey Class. No.: 025.52/ K963r