The biology of peronosopora viciae on pea : factors affecting the susceptibility of plants to local infection and systematic colonizatio n /
M.J. Mence and G.F. Pegg.
- Ashford, Kent : Wye College, University of London, 1970.
- 308 p. : ill., diagrs. ; 26 cm.
- Reprints ; no.491 .