Slebbins, G. Ledyard <br/><br/>
Flowering plants evolution above the species level  G. Ledyard Slebbins. 

 - London  Edword Arnold  1974 
 - xviii, 399p., ill. 
<br/><br/><label>ISBN: </label>713124873 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ornamental plants Decoraative flowers. 
<br/><br/><label>Dewey Class. No.: </label>582.5,  / S71F