Saettler, Paul <br/><br/>
A history of instructional technology 
Paul Saettler 
 - New York:  McGraw-Hill,  1968. 
 - xv,399p. 
<br/><br/> HB 
<br/><br/><br/>Eng 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Instructional technology-History
<br/><br/><label>Dewey Class. No.: </label>371.3078  / SAH