Drosdowski, Gunther <br/><br/>
Die rechtschreibung; duden 

 - Mannheim  Dudenverlag  1986 
 - 792 
<br/><br/><label>ISBN: </label>3411209003 
<br/><br/><label>Subjects--Topical Terms: </label><br/>German Literature (Donated Books); Donated by Professor Balasubramanian
<br/><br/><label>Dewey Class. No.: </label>DRO