Yang, Xiagui <br/><br/>
The invisible Great Wall =  Kan bu jian de Changcheng / 
 Kan bu jian de Changcheng 
writer Yang Xiagui 
 - Beijing :  Foreign Languages Press,  2004 
 - 207 p. :  col. ill., map ;  26 cm. 
<br/><br/><label>ISBN: </label>9787119036960 7119036963 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Landscape photography--China
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Great Wall of China (China)--Pictorial works<br/>Great Wall of China (China)--History