The ABC's of  ∆ ▢ O  (triangle/square/circle) : the Bauhaus and design theory. 

 - London :  Thames & Hudson,  1993. 
 - 64p :  Col.ill. ;  28 cm. 
<br/><br/><label>ISBN: </label>0500277141  8.95 
<br/><br/><label>Nat. Bib. No.: </label>GB93Y4027  bnb 
<br/><br/><label>Dewey Class. No.: </label>709.43