Beck, Charles B. <br/><br/>
Origin and evolution of angiosperms 

 - New York  Columbia University Press  1976 
 - vii,341p.  24cm. 
<br/><br/><label>ISBN: </label>0-231-03857-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Angiosperms, fossil
<br/><br/><label>LC Class. No.: </label>QE980.O74