Energlyn, Lord (William David Evans), 1912- <br/><br/>
Through the crust of the earth 
Lord Energlyn 
 - New York  McGraw-Hill  1973 
 - 127 p. :  ill. ;  31 cm. 
<br/><br/><label>ISBN: </label>0070195145 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology