Hackenbroich, Karin <br/><br/>
Sophia Marx malt Köln naiv / 
Karin Hackenbroich. 
 - Köln :  Bachem,  1981. 
 - 71 p. :  chiefly ill. (all col.) ;. 
<br/><br/><label>ISBN: </label>3-7616-0574-9 
<br/><br/><label>Subjects--Personal Names: </label><br/>Marx, Sophia,
<br/><br/><label>Subjects--Topical Terms: </label><br/>Primitivism in art--Germany--Cologne.<br/>Cologne (Germany) in art.