Stebbins, G. Ledyard (George Ledyard), 1906-  Stebbins, G. Ledyard (George Ledyard), 1906- <br/><br/>
Flowering plants :  evolution above the species level / 
G. Ledyard Stebbins. 
 - Cambridge, Mass. :  Belknap Press of Harvard University Press,  1974. 
<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.--Plants -- Evolution.<br/>Angiosperms -- Evolution.--Angiosperms -- Evolution.
<br/><br/><label>LC Class. No.: </label>QH368.5  / .S72 
<br/><br/><label>Dewey Class. No.: </label>582/.13/0438