Trevaskis, G. A. <br/><br/>
Preparing descriptive profiles for educational materials :  a manual for evaluators / 
prepared by G. A. Trevaskis. 
 - [Port Moresby] :  University of Papua and New Guinea, Educational Materials Centre,  1970. 
 - 16p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teaching--Aids and devices--Evaluation.