Trees Up Close: The Beauty of Their Bark, Leaves, Flowers, and Seeds

(美)Llewellyn·Robert, (美)Nancy ROSS Hugo

怎样观察一棵树：探寻常见树木的非凡秘密

Seeing trees : discover the extraordinary secrets of everyday trees

(美)Llewellyn·Robert, 南茜 罗斯 胡格, 等

Remarkable Trees of Virginia

(美)Nancy ROSS Hugo