Soil survey manual  

 - Washington  Agricultural Rsearch Administration  1951 
 - vii,503p.  23cm 
 - Agriculture Handbook No.18 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Materials<br/>Soil Science<br/>Specific Techniques<br/>Apparatus<br/>Equipment
<br/><br/><label>Dewey Class. No.: </label>631.4  / SOI