Ashton, T. <br/><br/>
The use of heterosis in the production of agricultural and horticult ural crops / 
T. Ashton. 
 - Cambridge :  Imperial bureau of plant breeding and genetics, Schoo l of agriculture,  1946 
 - 2 p.l. 30 p. ;  25 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant breeding<br/>Hybridization, Vegetable.
<br/><br/><label>Dewey Class. No.: </label>631.523