Graz, Christophe. <br/><br/>
Terra incognita :  preserving European earthen architecture / 

 - Portugal :  Argumentum,  c2008. 
 - 111 p. :  ill. (some col.). ;  30 cm. 
<br/><br/> Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9789728479558 
<br/><br/><label>LC Class. No.: </label>D4069 
<br/><br/><label>Dewey Class. No.: </label>720  / GRA