Tullis, Edward Langdon,  1908- <br/><br/>
Magnetometer surveys during 1941, 
by Edward L. Tullis. 
 - Vermillion, S.D.,  University of South Dakota,  1942. 
 - 40 p.  illus. 
 - South Dakota. State Geological Survey. Report of investigations,  no. 42 .
 - Report of investigations (South Dakota Geological Survey) ;  no. 42. .
<br/><br/> At head of title: State of South Dakota, Harlan J. Bushfield, Governor. State Geological Survey, E. P. Rothrock, State Geologist.  Reproduced from type-written copy. 
<br/><br/>"References": p. 30. 
<br/><br/><label>LCCN: </label>gs 42000164  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geomagnetism--South Dakota.<br/>Prospecting.<br/>Petroleum--Geology.
<br/><br/><label>LC Class. No.: </label>QC825.1.U8  / S84