Alex L. Shigo

1930

• Modern arboriculture
• A new tree biology
• A new tree biology dictionary
• Tree pruning
• 100 tree myths
• Tree Pruning Basics
• Another scale insect on beech
• Collar crack of birch
• Compartmentalization of decay in trees
• Defects in birch associated with injuries made by Xyloterinus politus Say
• Forest diseases research priorities in the northeast
• Homeowner's guide for beautiful, safe, and healthy trees