Richens, Richard Hook. <br/><br/>
Forest tree breeding and genetics / 
Richard Hook  Richens. 
 - Cambridge :  Imperial Bureau of Plant Breeding and Genetics,  19 45. 
 - 79 p. ;  25 cm. 
 - Imperial Agricultural Bureaux. Joint publication ;  no. 8. .
<br/><br/> Includes summaries in English, German, Frence and Spanish 
<br/><br/>Bibliography (p. 65-79). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trees.<br/>Plant breeding