Introduction to IBM data processing systems :  student text. 

 - 5th ed. 
 - Poughkeepsie, N. Y. :  International Business Machines,  1977. 
 - 1 v. (various pagings) :  ill. ;  28 cm. 
<br/><br/> 'This edition is a major revision of, and obsoletes all previous editions of GC20-1684. It is intended as a partial update of the previous edition (GC20-1684-3)'. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computers.<br/>Electronic data processing.