text Wadsworth Cengage Learning 2013 9th. ed. eng xxi, 767 p.: il. 26 cm Frederick J. Gravetter STATISTICS 519.5 519.5 Gra s 1 9788131521045 INLIS000000000073473 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)