Norstog, K.  1921- <br/><br/>
Plant biology / 
Knut Norstog, Robert W. Long. 
 - Philadelphia :  Saunders,  1976. 
 - vi, 585 p. :  ill. ;  27 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>072166864X 
<br/><br/><label>LCCN: </label>75000297  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany.
<br/><br/><label>LC Class. No.: </label>QK47  / .N81 1976 
<br/><br/><label>Dewey Class. No.: </label>581