Pollution and the use of chemicals in agriculture 
edited by David E. G. Irvine and Brian Knights 
 - London  Butterworths  1974 
 - [10], 136 p.  23 cm. 
<br/><br/> Symposium held at the Polytechnic of North London 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural chemicals--Environmental aspects<br/>Agricultural chemicals