Helbig, Gerhard, <br/><br/>
Übungs-grammatik Deutsch / 
Gerhard Helbig, Joachim Buscha 
 - 379 pages ;  22 cm. 
<br/><br/><label>ISBN: </label>9783126063661 
<br/><br/><label>Subjects--Topical Terms: </label><br/>German language--Grammar<br/>German language--Textbooks