Lawrence, William John Cooper. <br/><br/>
Practical plant breeding / 
by W. J. C. Lawrence ; with a foreword by Sir Daniel Hall. 
 - 3rd ed. 
 - London :  George Allen & Unwin,  1951. 
 - 166 p. :  ill. ;  19 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant breeding