00505nam a2200169Ia 4500008004100000082001700041100001700058245009500075260002900170650003300199650002000232650001400252650001300266650002000279650001800299700001800317220204s9999 xx 000 0 und d a581.2bHOR.3 aDIMOND, A E 0aPlant pathology: An advanced treatise. V 3. The diseased population epidemics and control. aNew YorkbAcademicc1960 aBreeding resistant varieties aDisease control aFungicide aInoculum aPlant pathology aQuarantinines aHORSFALL, J G