Wilbert Walter Weir <br/><br/>
Productive soils 

 - Chicago  J.B.Lippincott Co.  1946 
 - 325p 
<br/><br/>Wilbert Walter Weir & R.W. Gregory: Productive soils.  Chicago.  J.B.Lippincott Co., 1946.--(631.4WEI)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>631.4  / WER