Johansen, Carl A. <br/><br/>
Honeybee poisoning by chemicals; signs, contribution factors, current problems and prevention 

<br/><br/> Sobretiro de : Bee word 60(3):109-127, 1979 
<br/><br/><label>LCCN: </label>17244 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Abejas.<br/>Pesticidas--Efecto en insectos.