TY - BOOK AU - Cates, Ward Mitchell TI - Fifteen principles for designing more effective instructional hypermedia/multimedia products KW - COURSEWARE KW - DESARROLLO DEL MATERIAL KW - EFICACIA DE LA ENSE\197ANZA KW - HIPERMEDIA KW - INSTRUCCION MULTIMEDIA KW - REQUISITO DISE\197ADO N1 - Mayo 1993 ER -