TY  - SER
AU  - Humphrey, H. B. and others,
TI  - Phytopathology Vol. 19(1-12)
U1  - 632 
PY  - 1929///
CY  - Baltimore
PB  - American Phytopathological Society
KW  - Plant injuries, diseases & pests
KW  - Plant Pathology
ER  -