Rock art in the Sahara  conservation methodology and management 
Sid Ahmad Kerzabi ...[et al.] 
 - s.l.  UNESCO  n.d. 
 - 41p.  ill.  30cm  maps 
 - Studies and documents on the cultural heritage  no.13 .
<br/><br/><label>Dewey Class. No.: </label>301  / ROC