Soil survey manual/ 
by Soil Survey Staff, Bureau of Plant Industry, Soils, and Agricultural Engineering 
 - Rev. ed. 
 - United States Dept. of Agriculture, Washington:  Agricultural Research Administration,  1951 
 - eii, 503 p. :   ill. (some col.), maps ;   24 cm. 
 - Agriculture handbook (United States. Dept. of Agriculture) ; no.18. .
<br/><br/> 'This is a revision and enlargement of U.S. Department of Agriculture miscellaneous publication 274, the Soil survey manual, issued September 1937, and supersedes it.'  'Issued August 1951.'  Includes index. 
<br/><br/>p. 443-454. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil surveys--Handbooks, manuals, etc