Davis Robert H..(et.al). <br/><br/>
Learning system design : An approach to the impovement of instruction 

 - New York, USA  McGraw-Hill Book Company  1974 
 - ix,342p 
<br/><br/><label>ISBN: </label>0-07-074334-7 
<br/><br/><label>Source: </label>Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teaching Technique