Tofarides Maria <br/><br/>
Gatekeeper System 

 - Burlington  Ashgate Publishing ltd          2003 
 - ix,316p  cm. 
<br/><br/> Bibliography: P 292-314 
<br/><br/><label>ISBN: </label>0754617866 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>U43.5.P, P3