TY - BOOK AU - Pegg,G.F. AU - Mence,J. TI - The biology of peronospora viviae on pea : : laboratory experiments on the effects of temperature, relative humidity and light on the prod uction, germination and infectivity of sporangia / U1 - 630.7114223 PY - 1970/// CY - Ashford, Kent : PB - Wye College, University of London, KW - Plants, Effects of temperature on KW - Sporangia N1 - Includes bibliographical references ( p. 428.) ER -