Francis, Wilfrid,  1899- <br/><br/>
Coal :  its formation and composition / 
Wilfrid Francis. 
 - London :  E. Arnold,  1954. 
 - 567 p. :  ill. ;  24 cm. 
<br/><br/>Includes index and bibliographical reference 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal<br/>Paleobotany
<br/><br/><label>Dewey Class. No.: </label>553.21  / FRC 1954