Smith-Coley, R.J. <br/><br/>
Persistence and identification of downy mildew pseudoperonospora hum uli (miy. and tak.) wilson in hop rootstocks /  
J.R. Coley-Smith. 
 - Ashford, Kent  :    Wye College,    [n.d.] 
 - 129-132 p. :    ill., plates ;    25 cm. 
 - Reprint ;    no. 246 .
<br/><br/>Includes bibliographical references: p. 132 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Downy mildew diseases.<br/> Hops.