Gian Pietro Cellerino
FOOD AND AGRICULTURE
ORGANIZATION OF THE UNITED NATIONS
Rome,
1999
FAO - Food and Agriculture Organization of the United Nations
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"Review of fungal diseases in Poplar"
1.2. Diseases of stems and branches
1.2.1. Bark necrosis caused by Discosporium populeum
1.2.2. Necroses and cankers caused by Cytospora spp.
1.3. Diseases caused by Septoria spp.