A Colour Atlas of Diseases of Lettuce and Related Salad Crops 
Edward J. Ryder 
 - UK  Manson publishing ltd   2006 
 - 375p; ill 
<br/><br/><label>ISBN: </label>1840760508 
<br/><br/><label>LC Class. No.: </label>SB351.L6.B5 2006