Aston T <br/><br/>
Use of heterosis in the production of agricultural and horticultural crops 

 -  1946 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>56832 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>J3:5964, H6   CS