Principles of chemical weed control 

 - Belfast :  Ministry of Agriculture (Northern Ireland),  1970 
 - ADAS Leaflet,   No.144 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Weed control<br/>Weeds<br/>Chemical control<br/>Weedkillers
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>Weeds, weed control