Duff <br/><br/>
Holme's Principles of Physical Geology 
P. McL. Duff 
 - 4ht. ed. 
 - London  Chapman and Hall  1993 
 - xvi,791p.  ill  29 cm 
<br/><br/><label>ISBN: </label>041240320X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physical Geolgy