Mager, R. F. <br/><br/>
Preparing instructional objectives / 
Robert F. Mager. 
 - Revised 2nd. 
 - Carlifonia :  Lake Management and Training,  1989. 
 - vi, 136p. :  ill. 
<br/><br/><label>ISBN: </label>0822443414 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Programmed instruction.<br/>Programmed instruction.