Moulton, Gail Francis,  1898- <br/><br/>
Proper testing for oil structures in Illinois and some areas deserving such testing, 
by Gail F. Moulton. 
 - Urbana, Ill.,  1925. 
 - 22 p.  illus., tables., diagrs.  25 cm. 
<br/><br/> At head of title: State of Illinois. Department of registration and education. Division of the State geological survey. 
<br/><br/><label>LCCN: </label>gs 25000364  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petroleum--Illinois.<br/>Petroleum--Testing.
<br/><br/><label>LC Class. No.: </label>TN871  / .M6