Quadrivium :  the four classical liberal arts of number, geometry, music, & cosmology.  Anthony Ashton. 

 - New York :  Walker & Co.,  c2010. 
 - 409 p. :  ill. ;  20 cm. 
<br/><br/> "Wooden Books."  Previously published as: Sacred geometry. 2001. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780802778130 (hbk.) 0802778135 (hbk.) 
<br/><br/><label>LCCN: </label>2010016198  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plane geometry.
<br/><br/><label>LC Class. No.: </label>QA445  / .L86 2010 
<br/><br/><label>Dewey Class. No.: </label>516.22