Jarman, Arthur. <br/><br/>
Bulletin of the Institution of Mining and Metallurgy,  ;   No. 133 

 - Londres-XXK :   The Institution of Mining and Metallurgy,   1915. 
 - p. 1-38 :   maps., il. 
 - Irregular 
 - No. 133(Oct.1915) 
 - Bulletin of the Institution of Mining and Metallurgy,  ;   No. 133 .
 - Reino Unido.   The Institution of Mining and Metallurgy,. .