Thomas H. Nicholls

• How to identify butternut canker
• How to identify Lophodermium and brown spot diseases on pine
• How to identify white pine blister rust and remove cankers
• Pocket guide to christmas tree diseases
• Red pine needle rust disease in the Lake States
• Biology and conservation of owls of the Northern Hemisphere
• Control of Lophodermium needlecast disease in nurseries and Christmas tree plantations
• How to identify white pine blister rust and remove cankers
• Pocket guide to red pine diseases and their management
• Prevention, detection, and control of nursery tree diseases
• Sirococcus shoot blight