Sinclair, John <br/><br/>
Coal-mining economics: organization and management 
by John Sinclair 
 - London  Pitman  1957 
 - 337p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal miners --Great Britain<br/>Coal mines and mining --Great Britain<br/>Coal trade --Great Britain
<br/><br/><label>Dewey Class. No.: </label>Y2100x42 Si62