TY - BOOK AU - Mason,Robert Deward ED - TI - Programmed learning aid for business and economic statistics SN - 0256001197 U1 - 310.6 PY - 1978/// CY - Homewood, Ill. : PB - Learning Systems Co. KW - Statistics -- Programmed instruction. KW - Mathematical statistics. KW - Mathematical statistics -- Programmed instruction. N1 - Includes Indexes ER -