TY  - SER
AU  - 
TI  - Plant Pathology Vol. 18(1-4)
SN  - 117207772
SN  - 11-720779
U1  - 571.92 
PY  - 1969///
CY  - London
PB  - Her Majestys Stationary Office
KW  - Plant Pathology
ER  -