Thomas Mary <br/><br/>
Back crossing 

 -  1952 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>52519 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Plant breeding<br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>J:G:64, J2