TY - BOOK AU - Keller,Gerald AU - Warrack,Brian TI - Statistics for management and economics SN - 0534515843 U1 - 658.4/033 20 PY - 0000///د.ت CY - Belmont, CA PB - Duxbury Press KW - Economics KW - Statistical methods KW - Management N1 - Includes bibliographical references and index ER -