Davis, Robert H. <br/><br/>
Learning system design  an approach to the inprovement of instruction 

 - New York  McGraw Hill  1974 
<br/><br/><label>ISBN: </label>0-07-074334-7 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>371.3