15450
Cassell, Kay Ann
Reference and information services in the 21st century: an introduction
London
Facet
2009
xvii, 461 p. : ill.
Previous ed. : 2006
Includes bibliographical references and indexes
Kay Ann Cassell and Uma Hiremath
2nd ed
، Reference services )Libraries(
Z
711
.
C355
2009
AU
TI
CL
