Jarman, Arthur. <br/><br/>
Bulletin of the Institution of Mining and Metallurgy,  ;   No. 143 

 - Londres-XXK :   The Institution of Mining and Metallurgy,   1916. 
 - p. 1-10 :   il., maps. 
 - Irregular 
 - No. 143(Aug.1916) 
 - Bulletin of the Institution of Mining and Metallurgy,  ;   No. 143 .
 - Reino Unido.   The Institution of Mining and Metallurgy,. .