Wulff E V <br/><br/>
Historical plant geography 

 -  1950 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>74311 
<br/><br/><label>Source: </label> Textbook 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant experiments
<br/><br/><label>Dewey Class. No.: </label>I:5, J0;1   CS