Greenwood, Ken. <br/><br/>
Teach Yourself ABAP/4 in 21 Days /   Textual Documents 
NULL. 
 - New Delhi :   Techmedia ,   1999. 
 - 163 ;   24*16. 
<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Index Terms: </label>Programming Languages (A To Z) 
<br/><br/><label>Dewey Class. No.: </label>005.133  / GRE