Collingwood, Douglas Moore,  1887- <br/><br/>
Further consideration of prospects for oil in the Decatur area, 
by D. M. Collingwood. Printed by authority of the state. 
 - Urbana, Ill.  [Springfield,  Illinois State Journal Co.]  1924. 
 - 44 p.  illus. 
<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 24000226  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petroleum--Illinois--Decatur area.
<br/><br/><label>LC Class. No.: </label>TN872.I3  / C6