Hypoxylon canker of Aspen
U.S. Department of Agriculture, Forest Service, Forest Pest Leaflet. Washington, D.C.
Forest Insect and Disease Leaflet 6
Anderson, R.L.; Anderson, G.W.; and Schipper, Jr, Arthur L., "Hypoxylon canker of Aspen" (1979). Aspen Bibliography. Paper 4711.
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