TY - BOOK AU - Lewis, Roger ED - Guidelines/council for educational technology for the united Kingdom TI - How to write self-study materials T2 - Guidelines SN - 0861840364 AV - LB1049 .L4 1981 PY - 1981/// CY - London PB - Council for educational technology KW - Independent study KW - Education KW - Curricula KW - Teaching KW - Aids and devices ER -