Geological and landscape conservation :  proceedings of the Malvern International Conference 1993 / 
edited by Des O'Halloran ... et al. 
 - London :  The Geological Society,  1994. 
 - xiv, 530p. 
<br/><br/><label>ISBN: </label>1897799098 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Conservation of natural resources.<br/>Environmental geology.