IBM 3270 information display system 3279/3278/3276/3274 :  operator training study guide. 

 - Poughkeepsie, N.Y. :  International Business Machines,  1980. 
 - 1v. (various pagings) : ill. ;  28cm. 
 - IBM independent study program. .
<br/><br/> 'SR20-7386-0'. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>IBM 3270 (Computer).<br/>Information display systems.