Helfand, Jessica. <br/><br/>
Reinventing the wheel :  volvelles, equatoria, planispheres, fact-finders, gestational charts ... / 
Jessica Helfand. 
 - New York :  Princeton Architectural Press,  c2002. 
 - 158 p. :  col. ill. ;  25 cm. 
<br/><br/>Includes bibliographical references (p. 158-159)  
<br/><br/><label>ISBN: </label>9781568983387  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Circle in art.<br/>Wheels in art.