Johnson James Tr. <br/><br/>
Proceeding on plant sciences 

 -  1942 
 - p.  cm. 
 - Phytopathological classics; 7 .
<br/><br/><label>Standard No.: </label>57268 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>J452:4I23, H2