Soil. 

 - Washington  U.S. Govt. Print. Off.  1957. 
 - xiii, 784 p.  illus., maps. 
 - Its Yearbook of agriculture  1957 .
 - Yearbook of agriculture (Washington, D.C. : 1926)  1957. .
<br/><br/> Limited to the management of soil.  Includes index. 
<br/><br/><label>LCCN: </label>agr57000244 //r892 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soils<br/>Soils--United States.<br/>Soil conservation--United States.
<br/><br/><label>LC Class. No.: </label>S21  / .A35 1957 
<br/><br/><label>National Agricultural Library Call No.: </label>1Ag 84y 1957