Herm, Gerhard.
The celts: the people who came out of the darkness /
Gerhard Herm 
. - New York  : St. Martin's Press,  1977 
. - 312 p.  ill., map.  22 cm. 
<br/>К.: Бібліогр. : c. 297-298, Index 
<br/><label>  ISBN: </label>312-12705-7