Knight, David Neville <br/><br/>
Rocks, minerals and the earth's crust 
David N. Knight 
 - London  Methuen Educational  1973 
 - 63 p. : ill. ; 24 cm. 
 - Earth in Action .
<br/><br/><label>ISBN: </label>0423876201 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rocks