Lowson's textbook of botany 

 - Boston,  New York [etc.]  D.C. Heath & co.  1973 
 - x, 459 p.  front., ill., ports. 
<br/><br/> "Reference books": p. 426-437. 
<br/><br/><label>ISBN: </label>0723106142 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany.
<br/><br/><label>LC Class. No.: </label>MED QK4  / L6