TY - BOOK AU - Rogers,Everett M. TI - Diffusion of innovations SN - 0743222091 AV - HM621 R633D 2003 PY - 2003/// CY - New York, N.Y. PB - Free Press KW - DIFFUSION OF INNOVATIONS KW - STUDY AND TEACHING KW - HISTORY N1 - Includes bibliographical references and indexes ER -