Sleeman, Phillip J., <br/><br/>
Instructional media and technology:  a guide to accountable learning systems / 
Phillip J. Sleeman, Ted C. Cobun and D.M. Rockwell. 
 - viii, 374 pages :  illustrations ;  24 cm. 
<br/><br/>Includes bibliographies and index 
<br/><br/><label>ISBN: </label>0582280400  Hadiah 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational technology--Addresses, essays