Lewis, Roger <br/><br/>
How to write self-study materials/ 
Roger Lewis 
 - London:  Council for educational technology,  1981. 
 - 61 p.:  ill.;  21 cm 
 - Guidelines  10 .
<br/><br/><label>ISBN: </label>0861840364 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Independent study<br/>Education--Curricula<br/>Teaching--Aids and devices
<br/><br/><label>LC Class. No.: </label>LB1049  / .L4 1981