Zimdahl, Robert L.,  <br/><br/>
Weed crop competition :  a review / 
Zimdahl, Robert L. 
 - Oregon :  International Plant Protection Center Oregon State University,  1980 
 - xi, 195 pages :  no illustrations ;  22 cm 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Weeds --Pests and diseases
<br/><br/><label>LC Class. No.: </label>SB611 Z56