Symposium on the different methods of weed control and their integration   = Symposium ueber die verschiedenen methoden der unkrautbekampfung und ihre integration = Symposium sur les differentes methodes de desherbage et leur integration : proceedings 
/ Europen Weed Research Society 
 - Wageningen:  EWRS  , 1978 
 - 2 v.:  21 cm. 
<br/><br/><label>Subjects--Index Terms: </label>Malezas Control de plagas 
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Congreso