20th Century Art : Museum Ludwig Cologne 

 - Italia : Taschen, 1996 
 - 761 p. : il. ; 20 cm. 
<br/><br/><label>ISBN: </label>3-8228-8647-5 
<br/><br/><label>Subjects--Corporate Names: </label><br/>Museum Ludwig.
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arte moderno -- Siglo 20 -- Catálogos.
<br/><br/><label>LC Class. No.: </label>N2264.7 A51