Books with author Isabel Pin

One day a seed drops from the sky and lands right on the border between two territories. The tribes on both sides of the border immediately claim it. ""This means war!"" their leaders declare. Both sides prepare for battle with great inventiveness, creating huge arsenals of deadly weapons, and drawing up complicated plans of attack. But ironically, in the midst of all these preparations, the seed itself is quietly providing the simple solution that the tribes, in their haste, have overlooked.