Bell C Ritchie <br/><br/>
Plant variation and classification 
by Bell C Ritchie 
 - London  Macmillam         1968 
 - vi,135p.  cm. 
 - Fundamentals of botany series .
<br/><br/><label>Standard No.: </label>74300 
<br/><br/><label>Source: </label> Textbook 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany
<br/><br/><label>Dewey Class. No.: </label>I:11, K8   CS