Rosenberg, Harold,  1906-1978 <br/><br/>
The de-definition of art :  Action art to pop to earthworks / 
Harold Rosenberg. 
 - New York :  Horizon Press,  [1972]. 
 - 256 p. :  ill. ;  25 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Art, American--20th century<br/>Art--Philosophy