Duden :  die grammatik 

 - 12 v. :  illustrations ;  20 cm. 
<br/><br/><label>ISBN: </label>9783411040483 
<br/><br/><label>Subjects--Topical Terms: </label><br/>German language--Dictionaries<br/>German language--Orthography and spelling<br/>German language--EtymologyœxDictionaries<br/>German language--Grammar<br/>German language--Style<br/>German language--Usage<br/>German language--Foreign words and phrasesœxDictionaries<br/>German language--PronunciationœxDictionaries<br/>Quotations, German<br/>German language--Synonyms and antonyms<br/>German language--Terms and phrasesœxDictionaries<br/>German Language--Idioms<br/>Maxims, German--Dictionaries<br/>Proverbs, German