Bullough, Robert V. <br/><br/>
Creating instructional materials / 
Robert V. Bullough, Sr. 
 - 3rd ed. 
 - Columbus :  Merrill ,  1988 
 - xiii, 365 p.  :  ill. ;  24 cm. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>0675208688 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teaching--Aids and devices<br/>Audio-visual materials
<br/><br/><label>National Library of Medicine Call No.: </label>LB1043