Davis, P. H. <br/><br/>
Principles of Angiosperm taxonomy / 
[by] P.H. Davis [and] V.H. Heywood. 
 - Edinburgh :  Oliver and Boyd,  1963. 
 - xx, 558 p. :  ill. :  25 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>[            ] 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Angiosperms--Classification.