Perisho, Ellwood Chappell. <br/><br/>
A preliminary report upon the geography, geology and biology of Mellette, Washabaugh, Bennett and Todd counties, south-central South Dakota 
[by] Ellwood C. Perisho, State Geologist [and S. S. Visher] 
 - [n.p.]  1912. 
 - 152 p.  illus. 
<br/><br/><label>LCCN: </label>gs 13000072  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geography--South Dakota.<br/>Biology--South Dakota.
<br/><br/><label>LC Class. No.: </label>QE163  / .A3 no. 5