Ahlgren, Gilbert H. <br/><br/>
Principles of weed control / 
Gilbert H. Ahlgren, Glenn C. Klingman and Dale E. Wolf. 
 - New York :  John Wiley,  c 1951. 
 - vi, 368 p. :  ill. ;  22 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical reference. 
<br/><br/>328  328 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Weed control.<br/>Plant diseases.
<br/><br/><label>Dewey Class. No.: </label>632.58 / A48p