Powell, Derek. <br/><br/>
Interpretation of Geological Structures Through Maps  An Introductory Practical Manual 
Powell, Derek. 
 - NewYork  Longman  Scietific and Technical  1992 
<br/><br/><label>ISBN: </label>9780582087835 
<br/><br/><label>Dewey Class. No.: </label>551.80223  / POW.I