TY - BOOK AU - Clark, Ruth Colvin AU - Mayer, Richard E. TI - E-learning and the science of instruction: proven guidelines for consumers and designers of multimedia learning SN - 9780787986834 U1 - 658.312402854678 PY - 2008/// CY - San Francisco PB - Pfeiffer KW - Business education -Computer- assisted instruction; Education-Computer network resources KW - Personnel management N1 - with CD ER -