Economics of agro-chemicals :  an international overview of use patterns, technical and istitutional determinants, polices and perspectives 
/ed. by G.A. 
 -  199 
<br/><br/><label>ISBN: </label>1 84014 084 4 
<br/><br/><label>LCCN: </label>83382 
<br/><br/><label>Dewey Class. No.: </label>338.162