Beech bark disease
Shigo, A.L.
Beech bark disease - Washington 1970 - 1-8 p. - Disease United States Department of Agriculture, Forest Service. Forest Pest Leaflet No. 75 .
Beech bark disease - Washington 1970 - 1-8 p. - Disease United States Department of Agriculture, Forest Service. Forest Pest Leaflet No. 75 .