Thom A <br/><br/>
Megalithic rings :  plans and data for 229 monuments in Britain / 
A. & A.S. Thom ; collated, with archaeological notes by A. Burl. 
 - Oxford, Eng. :   British Archaeological Reports,   1980. 
 - 405 p. :   ill. ;   30 cm. 
<br/><br/><label>LC Class. No.: </label>DZ9