Weed management in agroecosystems:  ecological approaches/ 
Miguel A.Altieri and Matt Liebman. 
 - Boca Raton, Fla.  CRC Press  1988 
 - 354 page ;   27 cm. 
<br/><br/> Includes index 
<br/><br/>Bibliographies references and index 
<br/><br/><label>ISBN: </label>0849368162 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Weeds--Biological control<br/>Weeds--Ecology<br/>Agricultural ecology<br/>Tillage<br/>Agricultural systems