Hewage, L.G. <br/><br/>
Introduction to Programmed Instruction 

 - Colombo:  Lankasian,  1969. 
 - 108p.;  11cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>School Education
<br/><br/><label>Dewey Class. No.: </label>371.394  / HEW