Ashby, Maurice <br/><br/>
Introduction to plant ecology / 
Maurice Ashby 
 - New York :  Macmillan,  1969 
 - 287 p. :  ill ;  20 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Descriptive biology--plants<br/>Natural history--plants<br/>Plants
<br/><br/><label>Dewey Class. No.: </label>581.5