Pottmann, Helmut. <br/><br/>
Architectural geometry 
Helmut Pottmann, Andreas Asperl, Michael Hofer ; [edited by] Daril Bentley. 
 - 1st ed. 
 - Exton, PA  Bentley Institute Press  2007. 
 - 724p.  ill.  26cm 
<br/><br/><label>ISBN: </label>9781934493045 
<br/><br/><label>LCCN: </label>2007935192 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Architecture--Geometry
<br/><br/><label>LC Class. No.: </label>QA440  / .P66 2007