Birley, Robin <br/><br/>
Housesteads (vercovicium) :  Roman fort and civilian settlement / 
by Robin Birley 
 - Newcastle-upon-Tyne :  Frank Graham,  1973 
 - 28 p. :  ill. ;  22 cm. 
 - Northern history booklets  v.39 .
<br/><br/><label>ISBN: </label>0859830339 
<br/><br/><label>LCCN: </label>75-302770 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Housesteads--United Kingdom