Adams, P. J. <br/><br/>
The origin and evaluation graph of coal:   department of scientific and industrial research: geological survey and museum 

 - London:  Her Majesty's Stationery Office,  1960. 
 - 17p.:  ill.;  25cm. 
<br/><br/>Includes bibliographical 	references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal
<br/><br/><label>LC Class. No.: </label>BOT TP325.A22