TY - BOOK AU - Mence,M.J. AU - Pegg,G.P. TI - The biology of peronosopora viciae on pea : : factors affecting the susceptibility of plants to local infection and systematic colonizatio n / U1 - 630.7114223 PY - 1970/// CY - Ashford, Kent : PB - Wye College, University of London, KW - Growth (Plants) KW - Biology KW - Experiments N1 - Includes bibliographical references ( p.307-308) ER -