Gates, Frank Caleb. <br/><br/>
Field manuel of plant ecology 

 - New York :  McGraw-Hill,  1949 
 - 137 p.  : ilus. 
<br/><br/><label>LCCN: </label>74259 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecología vegetal.
<br/><br/><label>Dewey Class. No.: </label>581.5  / G38