TY - BOOK AU - Hall,Robert W. TI - Media math: basic techniques of media evaluation SN - 0844231282 : AV - HF5826.5 .H35 1991 U1 - 659.10151 20 PY - 1991/// CY - Lincolnwood, Ill., USA PB - NTC Business Books KW - Advertising media planning KW - Mathematics N1 - Includes bibliographical references and index ER -