Heinich , Robert  <br/><br/>
Instructiional media : and the technologies of instruction  

 - Macmillan :   America ;  1993. 
 - 463 p ; 24 cm .  01 
 - 2025-05-26 
<br/><br/><label>ISBN: </label>002353060X 
<br/><br/><label>Nat. Bib. No.: </label>0003050 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>ROB 
<br/><br/><label>Universal Decimal Class. No.: </label>371.3