TY - BOOK AU - Biagi,Shirley TI - Media/impact: an introduction to mass media : instructor's edition SN - 0534548113 (pbk.) U1 - 302.23 PY - 1999/// CY - Belmont, CA PB - Wadsworth Pub. Co. KW - Mass media N1 - Includes bibliographical references (p. 405-412) and index ER -