Coger, Rick <br/><br/>
Developing effective instructional systems / 
Rick Coger 
 - North Quincy, Mass :  The Christopher Publishing House,  1975 
 - 142 p. :  ill. ;  21 cm. 
<br/><br/>Bibliography: p. 137-142. 
<br/><br/><label>ISBN: </label>0815803273 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Instructional systems<br/>Teaching--Aids and devices