Bopp Richard E. Ed. Reference and information services An introduction - 3rd - Englewood Library Unlimited a Division of Greenwood Publishing Group, 2005 - xxiii, 611p. cm. - Library and Information science text series . Standard No.: 225,055 Source: Textual Subjects--Topical Terms: LIBRARY SCIENCE Dewey Class. No.: 2:7, P3 (2D)