German research. 

 - Weinheim :    John Wiley & sons Ltd.,    2005- 
 - ill. ;    27 cm. 
 - Annual 
 - (2005)- 
<br/><br/>  Latest issue consulted: (2005). 
<br/><br/><label>ISSN: </label>0172-1588 
<br/><br/><label>Dewey Class. No.: </label>500