Evans, William David,  Baron Energlyn. <br/><br/>
Through the crust of the Earth / 
Lord Energlyn. 
 - London :  Macdonald and Co.,  1973. 
 - 128p. 
<br/><br/><label>ISBN: </label>0356046044 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth.