TY  - BOOK
AU  - Spencer,D.M.(Douglas Malcolm),1927-
TI  - The Powdery mildews
SN  - 0126568502
PY  - 1978///
CY  - London
PB  - Academic Press
KW  - Powdery mildew diseases
KW  - Erysiphaceae
N1  - Includes bibliographies and index
ER  -