Stebbins, G. Ledyard <br/><br/>
Flowering plants  evolution above the species level 
G. Ledyard Stebbins. 
 - Cambridge, Mass.  Belknap Press of Harvard University Press  1974. 
 - xviii, 399 p.  ill.  24 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. [356]-380. 
<br/><br/><label>ISBN: </label>0674306856 
<br/><br/><label>LCCN: </label>73086939 //r842 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plants--Evolution.<br/>Angiosperms--Evolution.
<br/><br/><label>LC Class. No.: </label>QH368.5  / .S72 
<br/><br/><label>Dewey Class. No.: </label>582/.13/0438