Webster, Robin G.M. <br/><br/>
Stone Clearing and the Nature, Soiling and Decay Mechanisms of Stone / 
edited by Robin G.M. Webster 
 - London:  Routledge,  1992. 
 - 308p.  [hb] 
<br/><br/><label>ISBN: </label>9781873394090 
<br/><br/><label>Dewey Class. No.: </label>691.2  / WEB-S