Mortlock, Harry Crawford,  1892- <br/><br/>
Erosion and related land use conditions on the Box elder creek project, Nebraska, 
 Box elder creek project, Nebraska 
by H. C. Mortlock ... and R. D. Greenawalt ... 
 - [Washington,  U.S. Govt. print. off.,  1941] 
 - 34 p.  illus., maps.  26 cm. 
 - U. S. Soil conservation service. Erosion survey  no. 22 .
 - Erosion survey  no. 22 .
<br/><br/> 7 fold. maps in pocket. 
<br/><br/><label>LCCN: </label>agr42000134  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Land use--Nebraska.<br/>Soil conservation--Nebraska.
<br/><br/><label>LC Class. No.: </label>S623  / .U44 no. 22