KERR, G.L. <br/><br/>
Practical coal mining: a manual for managers, under-managers, collieny engineers & others with numerous problems arising from collieny work, with figures and diagrams 
KERR, G.L. 
 - L.  HENRY SUTHERAN & CO.  1905 
<br/><br/><br/>In English 
<br/><br/><label>Dewey Class. No.: </label>Ub XI, 5  1905