Ashton, T. S. <br/><br/>
The coal industry of the eighteenth century / 
by Thomas Southcliffe Ashton and Joseph Sykes 
 - 2nd ed. 
 - Augustus M. Kelley :  New York,  1967 
 - ix, 268 p. ;  23 cm. 
<br/><br/>Bibliography : p. 255-262 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal trade--Great Britain<br/>Coal miners--United Kingdom<br/>Coal mines and mining--Great Britain