D.D Shukla, C.W. Ward, A.A. Brunt <br/><br/>
The potyviridae 
Shukla, Dharma D, Ward Colin W, Brunt, Alan A 
 - Singapore  CAB international  1994 
 - xii, 516p;  ill, Hbk.: 
<br/><br/><label>ISBN: </label>0851988644