BOULTON, W.D. ed. <br/><br/>
Practical coal mining vol-i section-i the geology of the coal measured by boulton, w.  6 VOLUMES 
BOULTON, W.D. ed. 
 - L.  HENRY SUTHERAN & CO.  1908 
<br/><br/><br/>In English 
<br/><br/><label>Dewey Class. No.: </label>Ub XI, 6  1908