Mager, Robert F.,  <br/><br/>
Preparing instructional objectives :   a critical tool in the development of effective instruction 

 - 3rd ed. 
 - vii, 193 pages :   illustrations ;   23 cm 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>1879618036 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Programmed instruction.
<br/><br/><label>Dewey Class. No.: </label>371.3944