Keller, Arnold. <br/><br/>
When Machines Teach: Designing Computer Courseware /  

 - 1st ed /  
 - New York-10022 :   Harper & Row Publishers, Inc. ,   1977 
 - pvii,200 :  
<br/><br/><label>ISBN: </label>0-06-043591-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics
<br/><br/><label>Dewey Class. No.: </label>Bv:4  / M7