Francis, Wilfrid <br/><br/>
Coal :  its formation and composition / 
by Wilfrid Francis 
 - London :  Edward Arnold,  c1961 
 - viii, 806 p. ;  23 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal<br/>Mines and mineral resources
<br/><br/><label>Dewey Class. No.: </label>553.2