TY - GEN AU - O'Sullivan, Arthur AU - Sheffrin, Steven M. TI - Economics: principles and tools T2 - Prentice Hall series in economics SN - 0130081515 (hbk. : alk. paper) AV - HB171.5 .O84 2003 PY - 2003/// CY - Upper Saddle River, N.J. PB - Prentice Hall KW - Economics N1 - A variety of multi-medial instructional resources, including a web site, is available to supplement the text; Includes bibliographical references and index ER -