Pesticides  : their implications in agriculture 

 - Ottawa :  Department of Agriculture,  1973 
 - 38 p. 
 - Department of Agriculture. Publication  ; 1518 .
 - Department of Agriculture. Publication  ; 1518 .
<br/><br/><label>LCCN: </label>72115 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pesticidas.<br/>Pesticidas--Efecto en el medio ambiente.<br/>Pesticidas--Efecto en plantas.