Martin John H <br/><br/>
Principles of field crop production 

 -  1949 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>51248 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>J, H91