Greenwood, Ken. <br/><br/>
Sams teach yourself ABAP/4 in 21 days / 
Ken Greenwood. 
 - India  Pearson Education  1999 
 - 730 p. 
<br/><br/><label>ISBN: </label>9788131716113 
<br/><br/><label>Subjects--Topical Terms: </label><br/>R/3 (Computer system)<br/>ABAP/4 (Computer program language) ﾠ
<br/><br/><label>Dewey Class. No.: </label>650.0285 GRE-K