Johnson, Douglas Wilson,  1878-1944. <br/><br/>
The role of geology in the first world war, 
by Douglas Johnson. 
 - [New York]  The Society,  1942. 
 - 18 p.  23 cm. 
<br/><br/> At head of title: The Geological society of America. 
<br/><br/><label>LCCN: </label>gs 42000223  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology.<br/>Military topography.<br/>World War, 1914-1918.
<br/><br/><label>LC Class. No.: </label>QE33  / .J6