TY  - BOOK
AU  - D M Spencer
TI  - The Powdery Mildews
SN  - 0126568502
U1  - 581.2 SPE 
PY  - 1978///
CY  - London
PB  - Academic Press
KW  - history and taxonomy
KW  - geological distribution
KW  - epidemology of powdery mildews
ER  -