Weeds in tropical crops  : selected abstracts: on constraints on production caused by weeds in maize, rice,sorghum-millet, groundnuts and cassava:1952-1980 
/ Organisation des Nations Unies pour l'Alimentation et l'Agriculture 
. - Rome  : FAO, 1981
. - IX-58 p.  : couv.ill.  ; 28 cm. 
 - FAO plant production and protection paper .
<br/><br/>Index 
<br/><br/><label>ISBN: </label>925101146X 
<br/><br/><label>Source: </label> don 
<br/><br/><label>Universal Decimal Class. No.: </label>633.11