Zimdahl, Robert L. <br/><br/>
Weed-crop competition  : a review 

 - Corvallis, Ore. :  International Plant Protection Center,  1980 
 - 196 p. 
<br/><br/><label>LCCN: </label>56508 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Malas hierbas--Competencia.
<br/><br/><label>Dewey Class. No.: </label>632.58  / Z5