TY - GEN ED - Asian Development Bank TI - Designing open and distance learning materials SN - 971-561-264-4 U1 - 371.35 CY - Manila PB - ADB, PH KW - Distance education KW - Guide KW - Teaching materials KW - Media KW - Education KW - Educational systems KW - Curriculum development KW - Toolkit N1 - 20021205; M ER -