Northen henry t. <br/><br/>
Introductory plant science 

 - New york   John wiley & sons  1968 
<br/><br/><label>ISBN: </label>0 471 06816-0 
<br/><br/><label>LC Class. No.: </label>580/NOR  / 1 
<br/><br/><label>Dewey Class. No.: </label>580/NOR  / 1