Thomas, Mary,  1924- <br/><br/>
Back crossing :  the theory and practice of the backcross method i n the breeding of some non-cereal crops / 
Mary Thomas. 
 - Cambridge :  Commonwealth Bureau of Plant Breeding and Genetics ,  1952. 
 - vi, 136 p. ;  22 cm. 
 - Commonwealth Bureau of Plant Breeding and Animal Genetics;  Techni cal communication, 16. .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant-breeding.
<br/><br/><label>Dewey Class. No.: </label>631.52