Exotic aphid pests of conifers :    a crisis in African forestry, Ke nya Forestry Research Institute Muguga, Kenya 3-6 June, 1991. 

 - Rome :    Food and Agriculture Organization,    1991. 
 - 160 p. ;    29 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Conofers -- Diseases and pests.