Wittitich, Walter A <br/><br/>
Instructional technology :  Its nature and use / 
by Walter A Wittich 
 - New York :  Harper and Brothers,  1973. 
 - 737p. : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Technology
<br/><br/><label>Dewey Class. No.: </label>371.33  / WIT.I