Francis, Wilfrid, 1899-  Francis, Wilfrid, 1899- <br/><br/>
Coal :  its formation and composition. 

 - [2nd ed.]. 
 - London :  E. Arnold,  [1961] 
<br/><br/>Includes bibliographies. 
<br/><br/><label>LCCN: </label>61059776 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal.<br/>Paleobotany.
<br/><br/><label>LC Class. No.: </label>TN800  / .F7 1961