TY  - BOOK
AU  - Gaumann, Ernst
TI  - Principles of plant infection : a text-book of general plant pathology for biology for biologists, agriculturists, foresters and plant breeders = pflahzliche infektionslehre : Lehrbuch der allgemelnen pflanzenpathologies fur biologen landwirte forster und pflanzenzuchter
PY  - 1950///
CY  - London
PB  - Crosby Lockwood
ER  -