Prior, R. N. B. <br/><br/>
Key for the fiel identification of apterous and alate cereal aphids with photographic ilustrations 

 - Middlesex, England :  Ministry of Agriculture, Fisheries and Food,  1975 
 - 19 p.  : ilus. 
<br/><br/><label>LCCN: </label>58259 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Afídidos.<br/>Cereales--Plagas.