Hancock Alan <br/><br/>
Planning for educational mass media. 
Hancock Alan 
 - London  Longman         1977 
 - viii,383p  cm. 
<br/><br/><label>Standard No.: </label>33804 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>T:3,1, L7