Nicol Hugh <br/><br/>
Plant growth substances 

 -  1940 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>49734 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Plant growth<br/>Botany
<br/><br/><label>Dewey Class. No.: </label>I:7:E, H0