Keller, Horst <br/><br/>
ABAP objects : introduction to programming SAP applications 

 - Upper Saddle River, NJ:  Addison Wesley,  2002 
 - xiv, 556 p. : ill. ; 25 cm. + 2 CD-ROMs (4 3/4 in.) 
<br/><br/><label>ISBN: </label>9780201750805 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ABAP/4 (Computer program language)
<br/><br/><label>Dewey Class. No.: </label>005.13 KEL