Stevenson, John J.  1841-1924. <br/><br/>
Interrelations of the fossil fuels, 
by John J. Stevenson. 
 - Lancaster, Pa.,  New era printing company,  1916-1921. 
 - viii, 458 p.  24 cm. 
<br/><br/> "Reprinted from Proceedings of the American philosophical society, v. 55, 1916; v. 56, 1917; v. 57, 1918; v. 59, 1921." 
<br/><br/><label>LCCN: </label>gs 21000096  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal.<br/>Geology, Stratigraphic--Carboniferous.
<br/><br/><label>LC Class. No.: </label>TN800  / .S6